P0012: Variable Camshaft Timing Over-Retarded (Bank 1)

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P0012 - VARIABLE CAMSHAFT TIMING OVER-RETARDED (BANK 1)

Description:	The comprehensive component monitor (CCM) monitors the VCT position for over-retarded camshaft timing. The test fails when the camshaft timing exceeds a maximum calibrated value or remains in a retarded position.
Possible Causes:	Camshaft timing improperly set. Continuous oil flow to the VCT piston chamber. VCT solenoid valve stuck open. Camshaft advance mechanism binding (VCT unit).
Diagnostic Aids:	DTC P1383 is a check of the VCT unit. Testing should not include electrical checks. The engine will idle rough, start hard and may stall. Diagnostics and repair for the VCT unit are located in the appropriate ENGINE article.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	-	GO to GO to PINPOINT TEST HK: VARIABLE CAM TIMING (VCT) Step 15.	GO to GO to PINPOINT TEST HK: VARIABLE CAM TIMING (VCT) Step 15.