Ram OBD2 codes

Codes where we have reviewed, vehicle-specific evidence for this make.

Ram's notes come from FCA bulletins: an engine computer update for an oxygen sensor heater code on the ProMaster, strained IAT sensor wiring on the 2015 ProMaster City, a blocked fuel and EVAP line bundle on some 2021 Ram 1500s, and an air handling test for low boost on the 6.7L Cummins. Some 2012 to 2014 Ram models are also covered by a revised oil pressure sensor bulletin, so check your VIN with a dealer before buying parts.

C0020 from an ABS pump motor control fault

Supported by vehicle data

FCA bulletin S2005000004 covers C0020 for an ABS pump motor control electrical failure on 2017 to 2018 Ram 2500 and 3500 trucks. The bulletins say the hydraulic control unit can be replaced on its own. This is a brake system, so have it inspected by a qualified technician. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

C0020: ABS pump motor control circuit fault

C0020 and the ABS hydraulic control unit recall

Possible — needs testing

Recall 24V-896 covers 2017 to 2018 Ram 2500, 3500, 4500 and 5500 trucks whose ABS hydraulic control unit can fail and disable ABS, stability control and traction control; dealers replace the unit or its motor. The recall does not name C0020, so it is context only. Run a VIN recall check and have the brakes inspected by a dealer. This needs testing to confirm it applies to a given truck.

C0020: ABS pump motor control circuit fault

C0037 and C003A on rear wheel speed sensors and a brake module reprogram

Supported by vehicle data

A Ram bulletin covers C0037 and C003A on the 3500, where erratic rear wheel speed sensor signals turn on the ABS light and cost the ABS, trailer sway control and stability control. The listed fix is a brake system control module reprogram. Other Ram bulletins add replacing both rear sensors on some trucks and holding off repairs when the fault follows rumble strips. The brake system is safety-critical, so have it inspected by a qualified shop. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

C121C with loss of power and turbo or throttle codes

Supported by vehicle data

Ram 1500 owners report C121C, read as a torque request signal denied by the ABS module, together with loss of power and turbo boost or electronic throttle codes. One owner saw this while towing. Because this involves the ABS module, have it inspected. This comes from owner reports, not a bulletin, and has not been verified.

C121C: Torque request signal denied, stored in the ABS module (Chrysler, Jeep, Ram)

C1252 with the ESC light from the electric vacuum pump

Supported by vehicle data

FCA bulletin S1805000006 covers the ESC light with C1252 for the brake vacuum pump control circuit, sometimes with a vacuum pump performance code. It lists some Jeep, Ram and Chrysler models, including the Wrangler, Ram 1500 and Pacifica, and a revision extends it to later Wranglers. Brake assist depends on this pump, so have it inspected by a dealer. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

C1252: Hybrid brake booster or actuator fault (Toyota, Lexus) or vacuum pump control circuit (Chrysler, Jeep, Ram)

C2200 from an ABS module software fault on the Ram 1500

Supported by vehicle data

FCA bulletin S1908000074 covers the ABS lamp with C2200 on the 2019 Ram 1500, caused by a supervision software failure inside the anti-lock brake module. Brakes are safety critical, so have it inspected by a dealer. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

C2200: Anti-lock brake module internal fault (Ram, Dodge)

C2217 with the Service Electric Power Steering message on the ProMaster

Supported by vehicle data

FCA bulletin S2519000007 covers the Service Electric Power Steering message with C2217 and two other steering codes on the 2022 to 2025 Ram ProMaster. We only have the bulletin summary, which does not give the fix. Steering is safety-critical, so have it inspected. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

C2217: Electric power steering module internal fault (Chrysler, Dodge, Jeep, Ram)

P0013 from an oil control valve connector not seated

Supported by vehicle data

FCA bulletin 09-004-21 says P0013 on the 2021 Ram 1500 can come from an oil control valve connector that is not fully seated, and the fix is to seat it. Check that connector before buying a valve. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0013: Exhaust camshaft timing solenoid circuit, bank 1: the engine computer sees an open or faulty circuit to the bank 1 exhaust cam timing solenoid

P0020 on the 3.6L from a ground harness fault

Supported by vehicle data

Chrysler bulletin 0810921 covers a check engine light and rough running on the 3.6L in the 2021 Ram 1500, with P0020 among the cam actuator circuit codes. The repair in the summary is to cut a wiring harness eyelet and splice a pigtail into the engine ground harness. We read only the NHTSA summary, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0020: Bank 2 intake camshaft position actuator circuit fault

P0031 fixed by an engine computer update

Supported by vehicle data

FCA bulletin 1812222 lists a powertrain computer software update as the repair for P0031 on the 2022 ProMaster. Ask a dealer whether it has been done before replacing the oxygen sensor. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0031: The heater control circuit for the upstream oxygen sensor on bank 1 is reading too low

P0036 fixed with new oxygen sensor connectors

Supported by vehicle data

FCA bulletin 25-004-12 covers the 2010 to 2012 Ram 2500 and 3500 with P0036 among its oxygen sensor codes. It says to replace the oxygen sensor connectors and not to replace parts first. We read only the NHTSA summary, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0036: A fault in the heater control circuit of the downstream oxygen sensor on bank 1

P003A from the turbocharger actuator on Cummins trucks

Supported by vehicle data

Ram bulletin 0900522 is a warranty extension for the turbocharger actuator on 2015 Ram 2500 and 3500 trucks with the Cummins 6.7L diesel, and P003A is among the listed codes. The bulletin replaces the actuator. The summary we read is from NHTSA only, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P003A: Turbo boost control position (vane or actuator) outside the range the computer has learned

P0046 and a turbocharger actuator replacement on Cummins 6.7L Ram trucks

Supported by vehicle data

Chrysler (FCA US) bulletin 0900522 calls for replacing the turbocharger actuator on 2015 Ram 2500 and 3500 trucks with the Cummins 6.7L. The summary lists P0046 as turbocharger boost control circuit performance, along with other boost-related codes. A related revision covers 2013 to 2015 Ram 4500 and 5500. Only the NHTSA summary was read, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0046: Turbocharger boost control circuit performance fault

P0070 with a missing ambient air temperature reading

Supported by vehicle data

Chrysler bulletin S2208000080 covers a missing ambient air temperature reading with the check engine light on and P0070 on 2021 to 2022 Ram 1500 to 5500 trucks. It describes the ambient air temperature sensor circuit as reading high. Only the NHTSA summary was read, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0070: Outside (ambient) air temperature sensor circuit fault

P0107 with the check engine light on

Supported by vehicle data

Ram bulletin S1808000282 lists P0107 together with a related code behind a check engine light on 2019 Ram 1500 trucks. We only read the NHTSA summary, which gives no cause or fix, so check the air intake side and sensor connectors first. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0107: Manifold pressure or barometric pressure sensor signal too low

P0113 from strain on the IAT sensor wiring

Supported by vehicle data

FCA bulletin 08-011-16 says strain on the intake air temperature sensor wiring can set P0113 on the 2015 ProMaster City, and adds a jumper harness. Check the sensor wiring before replacing the sensor. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0113: The intake air temperature signal is stuck at a reading colder than any real air could be

P0152 with the MIL on

Supported by vehicle data

Ram bulletin S2308000118 lists the MIL on with P0152 (O2 sensor high) among the codes on the 2023 Ram 1500. The summary gives no repair. Only the NHTSA summary was read, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0152: The upstream oxygen sensor on bank 2 is sending a voltage higher than the computer thinks is possible

P0153 fixed by a PCM software update on some Ram vans

Supported by vehicle data

Ram bulletin 1813522 covers reprogramming the powertrain control module on 2015 to 2016 ProMaster vans with the check engine light on and stored codes that include P0153. The cached summary is cut off before the full code list. Only the NHTSA summary was read, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0153: The upstream oxygen sensor on bank 2 is slow to react to changes in the exhaust

P0158 with the check engine lamp on

Supported by vehicle data

FCA bulletin S2108000025 covers a check engine lamp on with P0158 (O2 sensor 2/2 circuit high) on 2019 to 2021 Ram 1500. Only the NHTSA summary was read, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0158: Oxygen sensor signal voltage reads too high, bank 2 sensor 2

P016F fixed by a PCM software flash

Supported by vehicle data

FCA bulletin 18-002-23 lists P016F among the codes a technician may find on the 2020 Ram 1500 diesel, and the PCM is flashed. A 2021 owner complaint ties the code to pump failure. We read only the NHTSA summary. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P016F: Closed-loop fuel pressure control has run out of range with pressure too low

P0174 from a blocked fuel and EVAP line bundle

Supported by vehicle data

FCA bulletin 1400521 links P0174 on some 2021 Ram 1500 trucks, with weak acceleration or rough starting, to a blocked fuel and EVAP line bundle. Ask a dealer to check the bulletin before replacing sensors or injectors. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0174: Engine computer has reached its limit adding fuel on bank 2: the mixture is lean

P0181 cleared by a PCM software update

Supported by vehicle data

FCA bulletin 18-038-15 Rev B says to reprogram the PCM with the latest software for a warning light that may come with one or more listed codes, including P0181, on the 2015 ProMaster 3.0L. We read only the NHTSA summary, not the bulletin itself. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0181: Fuel temperature sensor A signal is out of the range the computer expects

P018C fixed by replacing the fuel pressure sensor

Supported by vehicle data

Ram bulletin 14-001-19 says to replace the fuel pressure sensor when P018C sets for a low fuel pressure sensor circuit on the 2019 ProMaster City. Only the cached NHTSA summary was read. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P018C: Second fuel pressure sensor signal too low

P0205 and the wiring loom in the valve cover gasket

Supported by vehicle data

FCA bulletin 9002688 says that before replacing injectors for these injector circuit codes, make sure the wiring loom or connector in the valve cover gasket is not the root cause and that the wiring nuts are torqued to specification. It covers 2007 to 2012 Ram trucks. We read only the NHTSA summary. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0205: Fault in the electrical circuit for the fuel injector on cylinder 5

P0206 changed to two-trip faults by ECM reprogramming

Supported by vehicle data

Ram bulletin 1800214 reprograms the ECM/PCM on Cummins 6.7L diesel trucks. Per the summary, it changes injector circuit/open faults including P0206 from one-trip to two-trip faults when no defect is present. It applies to the 2014 Ram 3500 here. Only the NHTSA summary was read, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0206: Cylinder 6 fuel injector circuit fault

P0218 from a failed rear selective thrust washer

Supported by vehicle data

Ram bulletin 21-012-25 Rev A names P0218 among the codes for a failed rear selective thrust washer on some Ram trucks. We only have the NHTSA summary, not the bulletin itself, so details of the repair are unknown. This is a transmission internal problem, so a shop diagnosis is the sensible first step. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0218: Transmission fluid temperature too high

P0248 from wastegate rod retention clips installed incorrectly

Supported by vehicle data

NHTSA bulletin summary 11020622 names wastegate rod retention clips that were installed incorrectly, with P0248 among the listed codes, on the 2025 Ram 1500. Only the cached NHTSA summary was read. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0248: Wastegate solenoid B outside expected performance

P0299 on the 6.7L Cummins: air handling test and air filter

Supported by vehicle data

FCA bulletin 09-003-26 covers P0299 with low power or turbo lag on 2019 to 2024 Ram 2500 and 3500 trucks with the 6.7L Cummins, calling for an air handling test and possibly a new air filter. Low power can make merging or towing unsafe, so have it checked promptly. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0299: Turbocharger or supercharger is producing less boost than the engine computer requested

P0307, P3400 and P3497 with misfire codes on the 2023 Ram 1500

Supported by vehicle data

FCA bulletin 18-002-25 gives an engine computer update when misfire codes or the cylinder deactivation codes P0307, P3400 and P3497 set on the 2023 Ram 1500. Ask a dealer about the update before replacing cylinder deactivation parts. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0315 on 2025 Ram heavy duty trucks

Supported by vehicle data

Ram bulletin S2518000001 names P0315 on 2025 Ram 2500 and 3500 trucks. The NHTSA summary gives only the title and no repair. One owner reports being told not to drive the truck until a fix is available. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0315: The computer has not finished learning the crankshaft position pattern, or the pattern it sees no longer matches what it stored

P032F cleared by a PCM update with stall detection

Supported by vehicle data

FCA bulletin 18-020-25 covers a PCM update on 2025 Ram 2500, with 18-021-25 covering the Ram 3500. The update includes engine stall detection so P032F can clear after a power cycle, plus fixes for cruise dropouts. We read only the NHTSA summary. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P032F: The engine is producing less torque than the computer expects

P032F with stalls and a battery blamed by a dealer

Possible — needs testing

A NHTSA complaint for a 2023 Ram says a dealer retrieved P032F, could not duplicate the failure and said the battery was failing. That was not confirmed as the cause. This is a single complaint and NHTSA has not verified it. The source is owner reports, and it needs testing to confirm.

P032F: The engine is producing less torque than the computer expects

P0336 from a crankshaft tone wheel on the 3.0L diesel

Supported by vehicle data

FCA bulletin 14-007-21, a warranty extension, says P0336 on the 2014 to 2018 Ram 1500 3.0L diesel can come from the crankshaft tone wheel losing its magnetic material. Symptoms include limp mode above about 50 mph and periodic stalls, and the repair is a new tone wheel. Ask a dealer whether your truck is covered before replacing the sensor. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0336: The crankshaft position sensor 'A' signal is present but out of the expected range or pattern

P0339 and crank-no-start fixed by a PCM update on the Ram 1500

Supported by vehicle data

FCA 18-074-20 covers a PCM reprogram for P0339 on the 2019 Ram 1500, along with other codes. Listed symptoms include a crank but no start and a rough idle after a cold start. Ask a dealer whether the update has been done before replacing the sensor. We only read the NHTSA summary, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0339: Crankshaft position sensor A circuit intermittent

P0381 with the Wait to Start lamp inoperative

Supported by vehicle data

Ram bulletin S2609000005 covers a check engine light with P0381 and the Wait to Start lamp inoperative on 2025 to 2026 Ram heavy duty trucks. Only the NHTSA summary was read, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0381: The computer found a fault in the glow plug warning lamp circuit on a diesel engine

P0403 with an open EGR control circuit

Supported by vehicle data

Ram bulletin S2118000015 RevB covers a check engine light with P0403, an open EGR control circuit, on the 2020 to 2022 Ram 1500 and also lists the 2020 to 2022 Jeep Wrangler and Gladiator. The summary does not give the repair, so check the EGR control circuit and its connector first. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0403: EGR control circuit electrical fault

P0404 with surge or hard start, fixed with an EGR valve

Supported by vehicle data

Ram bulletin 09-010-16 and warranty extension X63 cover an occasional surge and hard starting on the 2012 and 2013 Ram 1500, and replace the EGR valve when P0404 is set. Ask a dealer to check the VIN for the extension. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0404: The EGR valve or its position sensor is not working within the expected range

P0407 with the MIL on for the EGR sensor

Supported by vehicle data

Ram bulletin S2025000005 covers a lit MIL with P0407 (EGR sensor B circuit low or high) on the 2020 to 2021 Ram 1500. A second bulletin, 9004343, says that when replacing the high pressure EGR valve because of these codes, all published diagnosis should be followed first, as the codes are for the low pressure EGR system. Only the NHTSA summary was read, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0407: EGR valve position sensor B signal reads too low

P0408 from the EGR sensor B circuit on the 2020 to 2021 Ram 1500

Supported by vehicle data

Ram bulletin S2025000005 Rev. covers the check engine light with P0408 set for the EGR sensor B circuit being low or high. A related Ram bulletin, 9004343, covers replacing the high pressure EGR valve for these codes and points to published service information on diagnosis first. We have only read the NHTSA summary and have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0408: EGR valve position sensor B signal reads too high

P0481 and a cooling fan that failed after a relay swap

Supported by vehicle data

An owner of a 2015 ProMaster City reports that the dealer replaced the cooling fan relay for P0481, then the fan melted and the engine overheated about 100 miles later. Test the fan motor as well as the relay. This comes from an owner report to NHTSA, not a bulletin, so it is labelled vehicle data rather than confirmed by bulletin.

P0481: Cooling fan 2 control circuit fault

P0563 and a hybrid control processor flash

Supported by vehicle data

Ram bulletin 0816622 covers updating the hybrid control processor software for a check engine light and/or battery charge warning light, with P0563 among the codes, on the 2022 Ram 1500. Only the NHTSA summary was read. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0563: The computer sees system voltage that is too high

P0572 with a brake switch stuck on the ProMaster

Supported by vehicle data

Ram bulletin S2205000001 Rev. covers the engine check light with P0572 for brake switch 1 stuck on, together with a brake light switch failure code, on the 2021 to 2022 ProMaster. The brake switch is part of the braking system, so have it inspected rather than attempting a repair yourself. We have only read the NHTSA summary and have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0572: Brake switch A circuit signal reading too low, the switch that tells the computer and cruise control when the brake pedal is pressed

P0572 and the brake pedal home position setting

Supported by vehicle data

Ram bulletin 9003530 covers P0572 or a related brake code, brake lights staying on, or cruise control not setting on 2015 to 2017 Ram 1500, 2500 and 3500. It says to check the Brake Pedal Home Position setting against the actual pedal resting position in the ABS module with wiTech. This involves the brake system, so have it inspected by a qualified shop. Only the NHTSA summary was read, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0572: Brake switch A circuit signal reading too low, the switch that tells the computer and cruise control when the brake pedal is pressed

P0601 fixed with an engine computer update

Supported by vehicle data

FCA bulletin 1802522 covers engine computer reprogramming for several codes, including P0601 as internal memory checksum invalid, on the 2022 Ram ProMaster. Adaptive cruise or remote start may also not work. Ask a dealer to check for the update before replacing the computer. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0601: Control module internal memory checksum error

P062A read as a fuel pump circuit range fault

Supported by vehicle data

The source is NHTSA owner complaints about Ram 1500 trucks. One owner's scan read P062A as a fuel pump circuit range or performance fault. The dealer reported a fuel pressure switch failure and replaced a connector, and the code returned. A later owner reports stalling and the code coming back after a fuel pump replacement. These are owner reports that NHTSA has not verified.

P062A: Problem in the fuel pump control circuit, range or performance

P0688 with a no-crank no-start

Supported by vehicle data

Ram bulletin S1918000013 covers a no-crank no-start on the 2019 to 2022 Ram 1500 with P0688 stored in the PCM, an auto shutdown relay sense circuit low. We only read the NHTSA summary. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0688: Engine computer power relay sense circuit fault

P0731 from the K1 clutch and input shaft

Supported by vehicle data

FCA bulletin 21-051-24 replaces the K1 clutch and input shaft assembly on 2019 to 2023 Ram 3500, 4500 and 5500 with the Aisin automatic when P0731 sets the check engine light. Bulletin 21-002-23 also repairs the K1 clutch drum snap ring on 2022 to 2023 trucks. Check the fluid level and condition first, then ask a dealer which bulletin fits your VIN. We have not confirmed the bulletins are still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0731: Transmission computer sees the wrong speed ratio in first gear

P0731 fixed by a transmission computer update on the Ram 1500

Supported by vehicle data

FCA bulletin 21-010-20 updates the transmission computer software on the 2016 Ram 1500 after a check engine light, and our data links it to P0731. Ask a dealer whether the update has been done before replacing parts. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0731: Transmission computer sees the wrong speed ratio in first gear

P0734 and an 845RE shift software update

Supported by vehicle data

FCA bulletin 21-025-15 updates the transmission computer software on the 2015 Ram 1500 with the 845RE to improve shifting, and our data links it to P0734. Ask a dealer whether the update has been done before replacing transmission parts. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0734: Transmission computer sees the wrong speed ratio in fourth gear

P0755 with solenoid and pressure switch codes

Supported by vehicle data

Ram bulletin S2121000008 covers a warning light with transmission solenoid and pressure switch codes, including P0755, on 2019 to 2022 Ram 2500 and 3500 trucks. The summary we read does not give the repair, so ask a dealer for the bulletin before replacing parts. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0755: Shift solenoid B circuit or operation fault

P0765 and event data before swapping the solenoid module

Supported by vehicle data

Ram bulletin 9004380 says that on 2020 to 2021 Ram 2500 and 3500 trucks with a repeatable P0765, technicians should download event data and send it in for root cause analysis before swapping the transmission solenoid module. Only the NHTSA summary was read. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0765: Shift solenoid D circuit fault

P07E4 that a transmission software update addresses

Supported by vehicle data

Ram bulletin 21-033-20 covers reprogramming the transmission computer for a check engine light with several codes, including P07E4, on the 2019 Ram 1500. It also improves shifter auto-position correction during an AutoPark event. We only read the NHTSA summary. Check whether the software update is available before replacing parts. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P07E4: Transmission unable to engage Park

P0826 from the electronic range select switch connection

Supported by vehicle data

Ram bulletin 9100459 asks for a check of the electronic range select switch connection before the gear selector is replaced for P0826 on 2023 to 2025 Ram 2500. Look for corrosion, pinching or a loose connector and reseat it. Only the NHTSA summary was read. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0826: Up and down shift switch circuit fault

P0826 fixed by a TCM update, 2025 Ram 3500

Supported by vehicle data

Ram bulletin 21-042-25 is a transmission control module update for up/down shift switch codes including P0826 on the 2025 3500. We only read the NHTSA summary. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0826: Up and down shift switch circuit fault

P0868 with loss of pump prime on Ram heavy duty trucks

Supported by vehicle data

FCA bulletin S2321000007 covers the check engine light with P0868 and a loss of hydraulic pump prime code on 2022 to 2023 Ram 2500 and 3500. A related FCA bulletin says not to replace the torque converter or internal transmission parts for it. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0868: Transmission computer sees fluid pressure lower than it should be

P0944 with lost hydraulic pump prime and low fluid pressure

Supported by vehicle data

Ram bulletin S2321000007 covers a warning lamp with P0944 for loss of hydraulic pump prime, together with a low transmission fluid pressure code, on the 2023 Ram 3500. A second Ram bulletin tells dealers not to replace the torque converter or internals. The summary does not state the repair. We read only the NHTSA summary and have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0944: Transmission hydraulic pressure lost

P0A3F from an MGU connector that is not fully seated

Supported by vehicle data

Ram bulletin 08-014-21 covers 2020 to 2021 Ram 1500 eTorque trucks where the motor generator unit connector is not fully seated, and the repair is replacing the MGU. P0A3F are among the codes, with symptoms of a stall after 15 to 40 minutes of driving, no restart, loss of 12-volt charging and a check engine light. Have it checked by a qualified shop. Only the NHTSA summary was read, not the bulletin itself. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P0A3F: Drive motor A rotor position sensor circuit fault

P1C64 fixed by a hybrid control processor update

Supported by vehicle data

FCA bulletin 08-093-22 names P1C64 as engine speed below target during an autostart on the 2022 Ram 1500. The customer may see the autostart fail, AutoPark engage and the transmission in limp mode. The remedy given is a hybrid control processor software update, and Rev B adds stop/start improvements. We read only the NHTSA summary. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P1C64: On Ram 1500 eTorque trucks, the hybrid system saw the engine turn slower than its target when stop-start tried to restart it

P1DB7 and a torque converter clutch reprogram

Supported by vehicle data

FCA bulletin 21-018-25 Rev A covers a warning light with P1DB7, a torque converter clutch performance fault, on the 2023 Wrangler. Sister bulletins cover the Gladiator and other Wrangler years. The remedy is reprogramming the TCM with the latest software. Only the NHTSA summary was read. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P1DB7: Torque converter clutch performance fault stored by the transmission computer on Jeep and Chrysler vehicles

P1DF3 fixed by reprogramming the TCM

Supported by vehicle data

Ram TSB 21-009-21 lists P1DF3 among codes that may appear on the 2019 Ram 1500 with a check engine light, clunks or harsh upshifts. The repair is reprogramming the TCM with the latest software, and no cause is stated. Ask whether the software is up to date before replacing parts. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P1DF3: ECU not initialized (Ram)

P1DF3 with an ECU not initialized message

Supported by vehicle data

Ram bulletin S2521000002 covers a warning lamp with P1DF3, ECU not initialized, on the 2025 Ram 1500. The summary we read does not state the repair, so there is little more to go on yet. Ask a dealer what the bulletin prescribes before replacing parts. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P1DF3: ECU not initialized (Ram)

P200A with soot inside the intake

Supported by vehicle data

An owner of a 2015 Ram 1500 reports a dealer finding excessive soot inside the intake with P200A after a loss of power. Inspect the intake for soot build-up before replacing actuators or sensors. The source is owner reports from the NHTSA complaint file, not a bulletin.

P200A: The engine computer has found that the intake manifold runner or variable intake valve on bank 1 isn't moving or performing as commanded

P2016 and a powertrain control module flash

Possible — needs testing

Ram bulletin 18-103-16 Rev. B is a powertrain control module flash for 2013 to 2015 Ram 1500 trucks, and its summary names P2016 among the codes. The summary does not state the repair for that code itself. Only the NHTSA summary was read. It needs testing to confirm. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P2016: Intake manifold runner position sensor or switch signal too low (bank 1)

P2016 from a spread terminal at the short runner valve

Supported by vehicle data

Ram bulletin S2308000109 traces a check engine light with P2016 to a spread terminal at the solenoid short runner valve connector, circuit F342, on the 2022 to 2023 Ram 1500. We read only the NHTSA summary. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P2016: Intake manifold runner position sensor or switch signal too low (bank 1)

P2017 with a powertrain computer flash

Possible — needs testing

Ram bulletin 18-103-16 REV. B flashes the powertrain computer for powertrain improvements on 2013 to 2015 Ram 1500 trucks. The NHTSA summary does not tie it clearly to P2017, so check the software level, but the code needs testing to confirm. Only the NHTSA summary was read, not the bulletin itself. This is labelled possible, and it needs testing to confirm. We have not confirmed the bulletin is still current.

P2017: Intake manifold runner position sensor signal too high (bank 1)

P2017 from a spread terminal

Supported by vehicle data

Ram bulletin S2308000109 traces a check engine light with P2017 and related codes to a spread terminal in circuit F342 on 2022 to 2023 Ram 1500 trucks. Check the connector terminals on that circuit for a loose fit first. We only read the NHTSA summary. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P2017: Intake manifold runner position sensor signal too high (bank 1)

P203F in extreme cold on the DEF system

Supported by vehicle data

Ram bulletin 18-034-21 gives additional diagnostic information for a reductant level sensor circuit fault or a reductant level too low code, P203F, with DEF diagnosis in extreme cold weather. It covers 2019 to 2021 Ram 2500, 3500 and 4500 trucks. We read only the NHTSA summary. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P203F: Diesel exhaust fluid level in the tank is too low

P207F among the codes set before an ECM or PCM reprogram

Supported by vehicle data

Ram bulletin 18-039-16 covers 6.7L diagnostic and system improvements through ECM and PCM reprogramming on 2016 Ram 3500 and 4500 trucks, and a technician may find P207F among the codes set. A later Ram bulletin, 9004406, for 2020 to 2021 says to contact FCA. Only the NHTSA summary was read. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P207F: Diesel exhaust fluid quality or dosing performance is below what the computer expects

P207F with a reductant quality performance fault

Supported by vehicle data

Ram bulletin S1625000007 Rev A covers the MIL on with P207F, a reductant quality performance fault, on 2016 to 2020 Ram 2500, 3500, 4500 and 5500 trucks. The NHTSA summary names only the code and gives no cause or fix. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P207F: Diesel exhaust fluid quality or dosing performance is below what the computer expects

P2110 from throttle blade icing

Supported by vehicle data

Ram bulletin 09-023-23 gives a service fix for throttle blade icing that can set P2110 in freezing weather on the Ram 1500. If the code appears only in cold weather, ask a dealer about the bulletin before replacing the throttle body. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P2110: The engine computer has deliberately limited engine speed because of a fault it found in the electronic throttle system

P2121 with intermittent loss of throttle input

Possible — needs testing

One owner of a Ram truck reported to NHTSA intermittent loss of throttle input with the check engine and electronic throttle control lights and P2121 stored, and three dealer visits had not found the cause. This is a single owner report, not a bulletin. Check the throttle pedal and its wiring first. The source is owner complaints, and it needs testing to confirm.

P2121: The accelerator pedal or throttle position sensor "D" signal does not make sense compared with the other throttle signals

P215C fixed by a transmission computer flash on the Ram 1500

Supported by vehicle data

FCA bulletin 21-016-14 is a transmission control module flash for 4x4 Low shift quality and a check engine light with P215C, described as an output shaft speed to wheel speed correlation fault, on the 2014 Ram 1500. Only the NHTSA summary was read, not the PDF. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P215C: On Chrysler, Dodge, Jeep and Ram vehicles, the transmission computer sees the output shaft speed and the wheel speeds disagree

P2172 and P2173 with manifold pressure circuit codes on the Ram 1500

Supported by vehicle data

Ram bulletin S1808000282 covers P2172 and P2173 on the 2019 Ram 1500 together with manifold pressure circuit codes. The summary does not say what the repair is. Ask a dealer to check this bulletin before replacing sensors. We only read the NHTSA summary, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P2172 and P2173 with the transmission shifting to neutral

Supported by vehicle data

Ram bulletin S2118000013 covers a transmission that may shift to neutral, with P2172 and P2173 and fuel trim codes, on 2019 to 2021 Ram 1500 trucks. Read all stored codes together before replacing parts. The bulletin is published on NHTSA, but we have not confirmed it is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P219F from a loose charge air cooler crimp

Supported by vehicle data

FCA bulletin 09-017-25 covers a loose charge air cooler case crimp on the 2025 Ram 1500, with P219F, a whistle and reduced boost. Listen for a whistle under boost and check the cooler. The bulletin is published on NHTSA, but we have not confirmed it is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P219F: Cylinder 4 is running at a noticeably different air-fuel ratio from the other cylinders, so the computer flags an imbalance on that cylinder

P226C listed in a PCM software update

Supported by vehicle data

FCA bulletin 18-010-21 lists P226C, a turbocharger boost control slow response code, among many codes fixed by a PCM software flash on 2019 Ram 2500 and 3500 trucks. An owner of a 2018 Ram 2500 also reports limp mode with the code. We read only the NHTSA summary. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P226C: Turbocharger boost is slow to respond to what the computer commanded

P2459 fixed by an engine computer reflash on the 6.7L diesel

Supported by vehicle data

Ram bulletin 18-028-16 REV. A calls for reflashing the engine computer on the Cummins 6.7L diesel for P2459, with the calibration chosen by whether an ammonia sensor is fitted. Only the cached NHTSA summary was read. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P2459: Diesel particulate filter cleaning cycles happen too often

P2463 in an air handling performance test bulletin

Supported by vehicle data

Ram bulletin 08-350-25 announces an air handling performance test and lists P2463 among its codes for 2023 to 2024 Ram 2500 and 3500 trucks. We read only the NHTSA summary, which gives no cause or repair. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P2463: Soot has built up in the diesel particulate filter beyond the limit the computer allows

P2509 after a roadside shutdown

Possible — needs testing

A 2015 Ram 3500 owner told NHTSA they scanned the truck at home after it shut down on the roadside and found P2509 along with other module codes, then cleared them. The complaint shows the code appeared, not what caused it, and it needs testing to confirm. The source is owner reports.

P2509: The engine computer's power supply is dropping out on and off

P2534 fixed by a hybrid control processor update

Supported by vehicle data

FCA bulletin 08-037-21 lists P2534, an ignition switch run and start circuit low fault, among the codes fixed by a hybrid control processor update on the 2021 Ram 1500. We read only the NHTSA summary. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P2534: Voltage on the ignition switch run/start circuit read by the computer is too low

P2560 and PCM software updates

Supported by vehicle data

FCA bulletin 18-010-21 lists P2560, an engine coolant level low fault, among the codes fixed by a PCM software flash on 2019 Ram 2500 and 3500 trucks. Bulletins 18-052-19, 18-059-20 and 18-101-22 also list it. Only the NHTSA summary was read. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P2560: The computer decided the engine coolant level is low

P258B with the ESC light on, from the vacuum pump system

Supported by vehicle data

FCA bulletin S1805000006 covers an ESC light with P258B on some FCA models. The fuller text, as quoted in an owner complaint, says to check pump operation, fusing, wiring and connector, and not to replace the ABS module when the ABS shows its code. Owners also report a hard pedal, a blown pump fuse or a melted pump wire. The brake system is safety critical, so have it inspected by a qualified shop. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin. We did not read the bulletin itself.

P258B: Brake vacuum pump not performing as the computer expects

P2609 from the intake heater on the 6.7L Cummins

Supported by vehicle data

FCA bulletin 68-21-00-71A covers intake heater issues and P2609 on 2012 to 2016 6.7L Cummins trucks. It says to replace the heater grid and relay as a set and to inspect the cable for overheating. Check the heater cable and connections first. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P2609: Diesel intake air heater system performance fault

P2681 and P26A3 from a broken gear in the coolant valve

Supported by vehicle data

FCA bulletin 07-005-24 covers the warning light with coolant bypass valve codes, including P2681 and P26A3, on the 2022 and 2023 Ram 1500, and replaces the 3-way coolant valve for a broken internal gear. Our notes say a second bulletin for later trucks covers contaminated coolant that needs a flush and a new valve. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P26A6 from a broken internal coolant valve gear

Supported by vehicle data

FCA bulletin 07-005-24 covers P26A6 on the 2022 to 2023 Ram 1500 and ties it to a broken internal gear in the coolant valve. The repair it names is replacing the 3-way coolant valve. We read only the NHTSA summary. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P26A6: Engine coolant bypass valve A: the valve position sensor reads too low

P26AB with a coolant bypass valve stuck

Supported by vehicle data

Chrysler bulletin 18-001-16 Rev C covers a powertrain control module flash for the 2016 Ram 1500 3.0L with bucking under hard acceleration and the MIL on. The code list names P26AB as engine coolant bypass valve stuck. Owners of 2014 to 2016 trucks also report the code, and one had the three-way cooling valve replaced. Only the NHTSA summary was read, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P26AB: Engine coolant bypass valve stuck: the valve that steers coolant to the heater core is not moving as commanded

P2701 with a check engine light and harsh shifts

Supported by vehicle data

Ram bulletin S2321000004 covers the check engine light and harsh shifting with P2701, a friction element B apply time performance code, on the 2021 Ram 2500. The summary does not state the repair. We read only the NHTSA summary, and we have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P2701: Transmission friction element B apply time out of range

P2757 from a loose snap ring in the torque converter

Supported by vehicle data

Ram bulletin 21-027-16 covers the check engine light with P2757, a converter clutch pressure solenoid performance fault, on some 2016 Ram trucks. The torque converter is replaced after confirming an internal snap ring has come loose. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

P2757: Torque converter clutch pressure control solenoid performance or stuck off

U0002 with steering and other modules offline

Supported by vehicle data

Ram bulletin S2308000042 covers the electric power steering and other CAN C modules going offline with U0002 on 2019 to 2024 Ram 1500 trucks. It says to contact FCA before replacing the steering gear. This is a steering or brake related fault, so have it inspected by a qualified technician rather than repairing it yourself. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

U0002: The high-speed CAN bus is still working but with too many errors or a poor signal

U0102 with a CAN bus error and skipped gears

Supported by vehicle data

One owner told NHTSA that an 8-speed automatic in some Ram trucks skipped gears with U0102, a CAN bus error, and that clearing the code let it run a few miles. This is an owner report, not a bulletin. Check battery and network connections and look for related codes. The source is owner complaints, so it is labelled vehicle data rather than confirmed by bulletin.

U0102: U0102 is a generic network code: a module lost communication with the transfer case control module on a four-wheel or all-wheel-drive vehicle

U0103 when the truck will not shift out of Park

Supported by vehicle data

Ram bulletin S2208000168 covers a 2022 to 2023 Ram 1500 that will not shift out of Park, with invalid data and loss of communication codes such as U0103 for the electronic shift module. Ask a dealer to check the bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

U0103: A module lost communication with the electronic gear shift module, the computer behind the shifter

U0104 cleared by a PCM flash

Supported by vehicle data

FCA bulletin 18-071-24 covers a PCM flash on the 2025 Ram 1500 for several fault codes, and U0104 may also be set. The flash lets these permanent codes clear so the check engine light does not block a state inspection. Only the NHTSA summary was read, and it is dated 2024-09-21. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

U0104: A module on the network stopped hearing the cruise control module

U010C from the turbocharger actuator on Cummins 6.7L Ram trucks

Supported by vehicle data

FCA 09-005-22 is a Cummins 6.7L turbocharger actuator warranty extension. It names U010C as lost communication with the turbocharger control module and prescribes replacing the actuator on 2015 Ram 2500 and 3500 trucks. Owners report power loss with the code, and one says it returned after parts were replaced. We only read the NHTSA summary. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

U010C: Lost communication with the turbocharger/supercharger control module

U0140 fixed by a powertrain computer update

Supported by vehicle data

FCA bulletin 18-013-15 reprograms the powertrain control module with the latest software when U0140 is found on 2015 Ram 2500 and 3500. Ask a dealer whether the update has been done before replacing modules. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

U0140: Lost communication with the body control module

U0159 with a truck that shut off and applied the park brake

Supported by vehicle data

A 2020 Ram 1500 owner complaint to NHTSA says the truck turned off more than 10 times on the way home, applied the park brake and went into park. The scan showed U0159, lost communication with the parking assist control module, and one other code. The truck's brakes are a safety system, so have it inspected rather than repaired at home. The source is an owner report to NHTSA, so this is labelled vehicle data rather than confirmed by bulletin.

U0159: A module on the network stopped hearing the parking assist control module

U0212 with ESC flashing and cruise cutting out

Supported by vehicle data

One NHTSA owner complaint on a 2019 Ram 2500 describes a flashing Service ESC message and cruise control dropping out with U0212. The owner says a dealer reflashed the ABS a year earlier and the fault came back. Stability control is a safety system, so have it inspected. The source is an owner report, not a bulletin, and is not independently verified.

U0212: A module on the network stopped hearing the steering column control module

U0402 with limp mode or no shifting

Supported by vehicle data

FCA bulletin S2221000001 covers the check engine light with U0402 on the 2022 Ram 1500, sometimes with no shifting, being stuck in gear, limp mode, lack of power or vibration. A 2023 bulletin, 1805023, updates the powertrain computer. Ask a dealer about the software updates before transmission parts are replaced. We have not confirmed the bulletins are still current, so this is labelled vehicle data rather than confirmed by bulletin.

U0402: A module received invalid data from the transmission computer

U0412 fixed by a battery pack module flash

Supported by vehicle data

Ram bulletin 08-167-26 covers a battery pack control module flash for a check engine light with U0412 and related codes on the 2025 ProMaster. Ask a dealer to check the bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

U0412: A module received invalid data from the battery energy control module, the computer that manages the high-voltage battery

U1267 with a shifter that will not shift out of park

Supported by vehicle data

FCA bulletin 9100395 covers shifter binding or a Service Shifter message on 2023 to 2024 Ram 1500. If U1267 or related codes are set, it says to check the wiring connectors and battery connections and disconnect and reconnect the shifter before further repair. Only the NHTSA summary was read, not the full bulletin. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

U1267: On Chrysler, Jeep and Ram vehicles, U1267 means the electronic shift module is sending no valid data on the CAN network

U1424 as an implausible engine torque signal on the Ram 1500

Supported by vehicle data

FCA 18-103-16 Rev. B is a selective erase and reprogramming of the PCM on 2013 to 2015 Ram 1500 trucks. It lists U1424, an implausible engine torque signal, for 2014 and 2015 along with other codes, and owners report shutoffs with the code. Only the NHTSA summary was read. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

U1424: On Chrysler, Dodge, Jeep and Ram vehicles, U1424 means a module received an implausible engine torque signal

C0020: ABS pump motor control circuit fault

Severity: Inspect soon Full C0020 guide

2500 2017–2018 · Supported by vehicle data · 3 bulletins
3500 2017–2018 · Supported by vehicle data · 3 bulletins
All models 2017–2018 · Possible — needs testing