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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls - Powertrain DTC Charts & Descriptions - (Hybrid)) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> DTC P0012: Intake Camshaft Position Timing - Over-Retarded (Bank 1)

DTC P0012: Intake Camshaft Position Timing - Over-Retarded (Bank 1)

WARNING: This page is about a different variant/trim than selected.
P0012 - INTAKE CAMSHAFT POSITION TIMING - OVER-RETARDED (BANK 1)

Description:  The powertrain control module (PCM) monitors the variable camshaft timing (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 incorrectly set
  • Continuous oil flow to the VCT piston chamber
  • VCT solenoid valve stuck open
  • Camshaft advance mechanism binding (VCT unit)
Diagnostic Aids:  This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to ENGINE SYSTEM-GENERAL INFORMATION , Oil Pressure Test, to check the engine oil pressure. Refer to ENGINE - 2.5L , Timing Drive Components, to check the engine timing.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All - GO to PINPOINT TEST HK . GO to PINPOINT TEST HK .