[amidgeha]

Cold Start (A) Camshaft Position Timing Over-Advanced

The Powertrain Control Module (PCM) monitors the Variable Camshaft Timing (VCT) position for an over-advanced camshaft timing during cold start up. The test fails when the camshaft timing exceeds a maximum calibrated value or remains in an advanced position.

Cause:
Faulty Crankshaft position sensor
Faulty Camshaft position sensor
Faulty Intake valve timing control solenoid valve
Faulty Intake valve timing intermediate lock control solenoid valve
Accumulation of debris to the signal pick-up portion of the camshaft
Incorrect timing chain installation
Foreign matter caught in the oil groove for intake valve timing control

Symptoms:
Check engine light