Engine Error
P0841
Transmission Fluid Pressure Sensor/Switch A Circuit Range/Performance
Severity
Medium
Symptoms
Vehicle goes into limp mode, erratic shifting patterns
Common Causes
- Contaminated transmission fluid
- Defective TFP sensor
- Internal pressure leak in transmission
- TCM software issue
How to Fix
- 1 Flush transmission fluid
- 2 Replace TFP sensor
- 3 Perform line pressure test
- 4 Update TCM software
Estimated Repair Cost
USD
$150
–
$800
Fluid flush and sensor: $200 - $500