Mitsubishi OBD2 codes

C161E with the AWD light on

Supported by vehicle data

Owners of the 2008 to 2010 Mitsubishi Lancer Evolution report C161E with the AWD light, and one owner quotes the readout as an electric pump relay circuit stuck. This is owner narrative and not a confirmed cause. Brake and stability systems are safety-critical, so have it inspected by a qualified shop. The source is owner reports to NHTSA.

• C161E: Mitsubishi active center differential pump or relay fault

C161E for an ACD pump actuator lock

Supported by vehicle data

NHTSA owner complaints on 2009 to 2011 Lancer and Ralliart report a dealer scan showing C161E as an ACD pump actuator lock. One owner was told it can happen under aggressive driving. Brake and stability faults are safety-critical, so have the system inspected rather than attempting repairs yourself. The source is owner reports, not a confirmed repair, so this is labelled vehicle data.

• C161E: Mitsubishi active center differential pump or relay fault

P0068 with speed limited on the Eclipse Cross

Supported by vehicle data

Mitsubishi TSB-18-13-001 covers P0068 on the 2018 Eclipse Cross, where vehicle speed is limited to 62 mph. The fix listed is an ECU reprogram, so ask a dealer whether the update has been done before replacing parts. 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.

• P0068: The airflow measured by the MAF or MAP sensor doesn't match the airflow the computer expects for the current throttle opening

P0133 oxygen sensor slow response, 2001 Diamante

Supported by vehicle data

Mitsubishi bulletin 011001 gives information on P0133 as an oxygen sensor circuit slow response on the 2001 Diamante. We only read the NHTSA summary, so the repair is not known. Check the oxygen sensor and its wiring first. We have not confirmed the bulletin is still current, so this is labelled vehicle data rather than confirmed by bulletin.

• P0133: Upstream oxygen sensor on bank 1 reacts too slowly

P0400 and an ECU reprogram

Supported by vehicle data

Mitsubishi TSB-23-13-004 covers the check engine light with P0400 on 2019 to 2023 Outlander Sport models. The repair is ECU reprogramming. 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.

• P0400: Exhaust gas recirculation flow is not what the computer expects

P0431 from catalyst layer separation

Supported by vehicle data

Mitsubishi bulletin TSB-13-15-001 says some exhaust-manifold-mounted converters on 2006 to 2008 Eclipse and Galant models can have catalyst layer separation, which sets P0431. It extends the converter warranty to 10 years or 120,000 miles in certain states. 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.

• P0431: Bank 2 catalytic converter warm-up efficiency is below the limit

P061A with a 25 mph fail-safe on the Eclipse Cross

Supported by vehicle data

Mitsubishi TSB-18-13-002 says that on the 2018 Eclipse Cross, P061A can set during turbocharged driving when the torque monitor does not recognise boost. The car then goes into fail-safe with speed limited to 25 mph. New engine ECU software fixes it, so ask a dealer about the update before replacing parts. 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.

• P061A: Engine computer internal fault: torque monitoring performance

P0657 in extreme cold from the throttle actuator relay

Supported by vehicle data

Mitsubishi TIN-18-13-001 says stored codes including P0657 in extremely cold weather are addressed by replacing the throttle actuator control relay. It covers the Outlander, Outlander Sport and Mirage. 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.

• P0657: Actuator supply voltage circuit open or out of range: the module that powers the engine and throttle actuators sees a problem with their supply

P0706 fixed by a transmission software update on the Outlander

Supported by vehicle data

Mitsubishi bulletin 23-23-002 updates the transmission and shift-by-wire control software on the 2022 to 2023 Outlander for P0706. 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.

• P0706: Transmission range sensor signal out of range or not plausible

P0712 fixed by transmission computer reprogramming on the Outlander

Supported by vehicle data

Mitsubishi bulletin 07-23-006 reprograms the transmission control module for P0712 on the 2007 Outlander, where SERVICE REQUIRED can show with no check engine light. 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.

• P0712: Transmission fluid temperature sensor signal reads too low

P0713 fixed by transmission computer reprogramming

Supported by vehicle data

Mitsubishi bulletin 0723006 says to reprogram the transmission control module for P0713 on the 2007 Outlander, which shows Service Required with no check engine light. Check the software level before replacing parts. 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.

• P0713: Transmission fluid temperature sensor A circuit, high input

P1751 from the transmission control relay

Supported by vehicle data

A NHTSA complaint for a 2003 Diamante says a dealer blamed the automatic transmission control relay for an intermittent no-start that set P1751. The source is owner reports, not a bulletin.

• P1751: Transmission code whose meaning differs: a hydraulic malfunction on Honda and Acura, a control relay fault on Mitsubishi

P1751 with the service engine soon light, per Mitsubishi bulletin 8113

Possible — needs testing

Mitsubishi bulletin 8113 covers the service engine soon light with P1751 on the 2002 Montero Sport. The NHTSA summary names the code but not its meaning or a repair. 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.

• P1751: Transmission code whose meaning differs: a hydraulic malfunction on Honda and Acura, a control relay fault on Mitsubishi

P2097 that can be false and fixed by software

Supported by vehicle data

Mitsubishi TSB-15-13-002 covers a false P2097 on the Lancer and Outlander, with a software fix. Ask a dealer whether the update applies 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.

• P2097: The engine computer has had to take fuel away based on the downstream oxygen sensor because the exhaust after the catalytic converter reads rich on bank 1

U0141 from an ETACS-ECU CAN timeout

Supported by vehicle data

Mitsubishi TSB1942B003 covers an ETACS-ECU CAN timeout with U0141 on Outlander, Outlander Sport and Lancer Sportback models, and updates the service manuals with revised diagnostics. TIN-16-36-001 covers the 2017 Outlander with the code stored beside a body code. We only read the NHTSA summaries. We have not confirmed either is still current, so this is labelled vehicle data rather than confirmed by bulletin.

• U0141: Lost communication with the body control module

C161E: Mitsubishi active center differential pump or relay fault

Severity: Severity not verified Full C161E guide

• Lancer 2009–2011 · Supported by vehicle data
• Lancer Evolution 2008–2010 · Supported by vehicle data

P0068: The airflow measured by the MAF or MAP sensor doesn't match the airflow the computer expects for the current throttle opening

Severity: Inspect soon Full P0068 guide

• Eclipse Cross 2018 · Supported by vehicle data · 1 bulletin

P0133: Upstream oxygen sensor on bank 1 reacts too slowly

Severity: Severity not verified Full P0133 guide

• Diamante 2001 · Supported by vehicle data · 1 bulletin

P0400: Exhaust gas recirculation flow is not what the computer expects

Severity: Monitor Full P0400 guide

• Outlander Sport 2019–2023 · Supported by vehicle data · 1 bulletin

P0431: Bank 2 catalytic converter warm-up efficiency is below the limit

Severity: Monitor Full P0431 guide

• Eclipse 2006–2008 · Supported by vehicle data · 1 bulletin
• Galant 2006–2008 · Supported by vehicle data · 1 bulletin

P061A: Engine computer internal fault: torque monitoring performance

Severity: Inspect soon Full P061A guide

• Eclipse Cross 2018 · Supported by vehicle data · 1 bulletin

P0657: Actuator supply voltage circuit open or out of range: the module that powers the engine and throttle actuators sees a problem with their supply

Severity: Inspect soon Full P0657 guide

• Outlander 2014–2018 · Supported by vehicle data · 1 bulletin

P0706: Transmission range sensor signal out of range or not plausible

Severity: Inspect soon Full P0706 guide

• Outlander 2022–2023 · Supported by vehicle data · 1 bulletin

P0712: Transmission fluid temperature sensor signal reads too low

Severity: Severity not verified Full P0712 guide

• Outlander 2007 · Supported by vehicle data · 1 bulletin

P0713: Transmission fluid temperature sensor A circuit, high input

Severity: Severity not verified Full P0713 guide

• Outlander 2007 · Supported by vehicle data · 1 bulletin

P1751: Transmission code whose meaning differs: a hydraulic malfunction on Honda and Acura, a control relay fault on Mitsubishi

Severity: Severity not verified Full P1751 guide

• Diamante 2003 · Supported by vehicle data
• Montero Sport 2002 · Possible — needs testing · 2 bulletins

P2097: The engine computer has had to take fuel away based on the downstream oxygen sensor because the exhaust after the catalytic converter reads rich on bank 1

Severity: Monitor Full P2097 guide

• Lancer 2011–2014 · Supported by vehicle data · 1 bulletin

U0141: Lost communication with the body control module

Severity: Inspect soon Full U0141 guide

• Outlander 2010–2018 · Supported by vehicle data · 2 bulletins