Engine Error
P0846
Transmission Fluid Pressure Sensor/Switch B Circuit Range/Performance
Severity
Medium
Symptoms
Transmission slips, limp mode activated, poor fuel economy
Common Causes
- Defective TFP Sensor B
- Low fluid pressure from failing pump
- Internal seal leak
- Corroded sensor connector
How to Fix
- 1 Replace TFP Sensor B
- 2 Test main line pressure
- 3 Rebuild transmission if seals are leaking
- 4 Clean electrical connector
Estimated Repair Cost
USD
$100
–
$2500
Sensor: $150 - $400; Rebuild: $2,000+