P0846: Transmission fluid pressure sensor/switch B range or performance

Fluid pressure sensor B range/performance

Severity: Inspect soon

A pressure sensor that reads wrong can cause harsh shifts, slipping or limp mode, and Nissan's CVT judder bulletin lists this code, so check it soon.

It gets more serious if:

Stop: Treat as Stop if the transmission slips badly, will not move or is in limp mode.

Source: how we rate severity

P0846 in short

P0846 means the transmission fluid pressure sensor or switch B reading is out of range. TroubleCodes.net lists the sensor, wiring, a control module needing a reflash and internal damage. Nissan lists it with CVT judder on 2013-2017 Sentra and Versa. Check fluid and bulletins soon.

A fluid pressure sensor reports internal transmission pressure to the computer. If the reading does not make sense for what the computer commanded, P0846 sets.

Causes in references include the sensor itself, wiring, a control module that needs a reflash, dirty fluid, a pressure solenoid and internal damage. Bulletins include Nissan NTB17-034k (CVT judder, Sentra, Versa, Versa Note), Subaru 18-241-26 (corrected CVT diagnostics) and Chrysler 2100905.

Fluid and bulletins come before parts.

Most likely causes

Cause 1: CVT bulletin repair or procedure
Supported by vehicle data
Why it ranks here
Nissan NTB17-034k lists P0846 with CVT judder on 2013-2017 Versa and 2014-2017 Versa Note. Subaru 18-241-26 corrects diagnostic procedures for CVT DTCs including P0846.
What would change this
Rises if your VIN matches. Falls if not.
Cause 2: Pressure sensor or wiring
Common general cause
Why it ranks here
Both references list the sensor, wiring and connectors.
What would change this
Rises if voltage or resistance is off. Falls if good.
Cause 3: Dirty fluid or pressure control solenoid
Common general cause
Why it ranks here
PartsAvatar lists dirty fluid and the electronic pressure control solenoid.
What would change this
Rises if fluid is dark or the pressure is erratic.
Cause 4: Control module reflash
Common general cause
Why it ranks here
TroubleCodes.net lists a control module that needs a reflash.
What would change this
Rises if a newer calibration exists.
How to test the transmission control module (tcm)

What to test first

Start at step 1. Each result tells you what it means and where to go next.

Step 1: Ask a dealer about bulletins for your VIN and check fluid level and condition.
Low riskTool: scan tool
- IfA bulletin applies
  It meansFollow it.
  Points to: CVT bulletin repair or procedure
- IfFluid is dirty or low
  It meansCorrect it.
  Points to: Dirty fluid or pressure control solenoid
- IfNeither
  It meansTest the sensor.
  Go to step 2
Step 2: Have a shop test sensor voltage, reference and wiring.
Best left to a shopTool: multimeter, scan tool
Warning:Have a qualified shop do this step.
- IfThe sensor or wiring fails
  It meansRepair it.
  Points to: Pressure sensor or wiring
- IfGood, and pressure is odd
  It meansInternal or software cause.
  Points to: Control module reflash

Symptoms

Harsh shifts or CVT judder
Slipping or limp mode Gets more serious: stop and have it checked.
Check engine light
Higher fuel use

How to fix

Step 1: Ask a dealer whether your VIN has a bulletin for P0846 or CVT judder.

Parts and cost context

Transmission control module (TCM):A reflash is possible on some models. Labor varies; get a quote.

Labor varies by vehicle and shop; get a quote before you approve a repair.

Compare used part prices on PartPriceGuide

On your vehicle

Nissan

2013–2017 · Versa
Supported by vehicle data
Nissan NTB17-034k lists P0846 with CVT judder on the Versa Sedan, Versa Note and related models. Whether the bulletin is still current is not verified.

NTB17-034kStatus unverified
CVT judder and/or P0746, P0965, P17F0, P0846 stored
2013–2017versa, versa-note, sentra · NHTSA 10172234
Nissan bulletin for Versa Sedan 2013-2017 and Versa Note 2014-2017; the summary names these models.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Subaru

2019–2024 · Legacy
Supported by vehicle data
Subaru 18-241-26 corrects diagnostics for CVT DTCs including P0846. Whether the bulletin is still current is not verified.

18-241-26Status unverified
Corrected diagnostics for CVT DTCs including P0846
2019–2024legacy, outback · NHTSA 11033077
Subaru: announces a correction to diagnostic procedures; also lists Ascent, Crosstrek, Forester and Impreza.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

All Transmission codes

P0846 questions

Can I drive with P0846?

Short trips to a shop are usually possible if it shifts normally; stop if it slips or enters limp mode.

Sources and review

P0846 Trouble Code: Transmission Fluid Pressure Sensor/Switch B Circuit Range/Performance — TroubleCodes.net
OBD II error code P0846: Transmission Fluid Pressure Sensor/Switch B Circuit Range/Performance — PartsAvatar
Nissan NTB17-034k: CVT judder and/or P0746/P0965/P17F0/P0846 — Nissan (via NHTSA flat file)
Subaru 18-241-26: corrected CVT DTC diagnostic procedures including P0846 and P0867 — Subaru (via NHTSA flat file)
Chrysler 2100905: MIL for P0750, P0755, P0760, P0765, P0846, P0871 or P0841 — Chrysler (via NHTSA flat file)

Last reviewed: October 15, 2026
Written by: Saurabh K.
Editorial review: Pending
Technician review: Technician review pending

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error

Severity: Inspect soon

Most likely causes

Cause 1: CVT bulletin repair or procedure

Cause 2: Pressure sensor or wiring

Cause 3: Dirty fluid or pressure control solenoid

Cause 4: Control module reflash

What to test first

Step 1: Ask a dealer about bulletins for your VIN and check fluid level and condition.

Step 2: Have a shop test sensor voltage, reference and wiring.