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HOMESERVICE MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 550 (ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM L3))DTC P0012 [L3]NOTES
2010 Mazda 5 Sport, 2.3 L, Standard

DTC P0012 [L3]: Notes

2010 Mazda 5 Sport, 2.3 L, StandardSECTION Notes
WARNING: This page is about a different car, the 2008 Mazda 5. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0012 [L3] DETECTION CONDITIONS AND POSSIBLE CAUSES

DTC P0012 CMP Timing over-retarded
DETECTION CONDITION 
  • Actual valve timing is over-retarded by 10° from the target valve timing for 5 s when the OCV system control is within the feed-back range.

    Monitoring condition 

    • Engine speed is below 4,000 rpm 
    • Engine coolant temperature is 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.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Oil control valve (OCV) malfunction
  • Low engine oil pressure
  • Spool valve in the OCV is stuck in retard position.
  • Variable valve timing actuator is stuck in retard position.
  • Following oil runners are clogged or have leakage.

    Oil runners 

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

NO RELATED

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