Engine Error
P0845
Transmission Fluid Pressure Sensor/Switch B Circuit
Severity
High
Symptoms
Check engine light, harsh downshifts, transmission shudder
Common Causes
- Failed TFP Sensor B
- Short or open in sensor B circuit
- Dirty fluid blocking sensor port
- Valve body failure
How to Fix
- 1 Replace TFP Sensor B
- 2 Repair wiring harness
- 3 Clean valve body and change fluid
- 4 Replace valve body
Estimated Repair Cost
USD
$150
–
$900
Sensor replacement: $200 - $500; Valve body: $600 - $900