OBD-II code · Powertrain (generic)
P0841 Transmission Fluid Pressure Sensor/Switch A Circuit Range/Performance
TCM detects rationality fault between fluid pressure sensor A signal and commanded line pressure during defined operating conditions.
Is it safe to drive with P0841?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelySensor failed
- PossibleLow ATF level
- Less likelySensor element aged beyond calibration window
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Transmission Fluid Pressure Sensor, Valve Body
Related codes
- P083BTransmission Fluid Pressure Sensor/Switch G Circuit Range/Performance
- P0840Transmission Fluid Pressure Sensor/Switch A Circuit Range/Performance
- P0846Transmission Fluid Pressure Sensor/Switch B Circuit Range/Performance
- P084BTransmission Fluid Pressure Sensor/Switch H Circuit Range/Performance
- P0871Transmission Fluid Pressure Sensor/Switch C Circuit Range/Performance
- P0876Transmission Fluid Pressure Sensor/Switch D Circuit Range/Performance
- P0988Transmission Fluid Pressure Sensor/Switch E Circuit Range/Performance
- P0993Transmission Fluid Pressure Sensor/Switch F Circuit Range/Performance
- P083ETransmission Fluid Pressure Sensor/Switch G Circuit Intermittent
- P083FClutch Pedal Switch A/B Correlation
- P0842Transmission Fluid Pressure Sensor/Switch A Circuit Low
- P0843Transmission Fluid Pressure Sensor/Switch A Circuit High
- P0844Transmission Fluid Pressure Sensor/Switch A Circuit Intermittent
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.