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HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 589 (ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM L3 WITH TC])DTC P0012NOTES
2008 Mazda 6 s Sport, 4D Hatchback, Standard

DTC P0012: Notes

2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Notes
WARNING: This page is about a different car, the 2007 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0012 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0012 CMP Timing over-retarded
DETECTION CONDITION 
  • Actual valve timing is over-retarded by 5°  (when the following conditions are met) from the target valve timing for 5 s  when the OCV system control is within the feedback range.

    MONITORING CONDITION 

    • Engine speed is below 4, 000 RPM. 
    • Engine coolant temperature is above 70-110°C {158-230°F}. 

Diagnostic support note 
  • This is a continuous monitor (CCM).
  • MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
  • PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA is available.
  • DTCs are stored in the PCM memory.
POSSIBLE CAUSE 
  • OCV (oil control valve) malfunction Low engine oil pressure
  • Spool valve in OCV (oil control valve) is stuck in the retard position.
  • Variable valve timing actuator is stuck in the retard position.
  • Following oil runners are clogged or have leakage.

    Oil runners 

    • Between oil pressure switch and OCV (oil control valve)
    • Between OCV (oil control valve) and variable valve timing actuator
    • In variable valve timing actuator
  • Loose timing chain or improper valve timing due to timing chain slippage
  • PCM malfunction
RENDER: 1.0x

NO RELATED

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