P0453

Test 1:

Test 2-5:

Test 6-8:

SYMPTOM
P0453-NVLD PRESSURE SWITCH SENSE CIRCUIT HIGH

WHEN MONITORED
Engine Running.

SET CONDITION
If the PCM does not see the NVLD switch close during test an error is detected. One Trip Fault.

POSSIBLE CAUSES
- NVLD switch operation
- Vehicle history and service bulletin investigation
- NVLD assembly
- (K107) NVLD switch signal circuit shorted to battery voltage
- (K107) NVLD switch signal circuit open
- (K107) NVLD switch signal circuit shorted to the (K106) solenoid control circuit
- (Z201) ground circuit open
- PCM