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Home >> Mazda >> 2017 >> CX-9 Signature >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (1 Of 5) >> DTC P0014-00; Hydraulic Variable Valve Timing Control System: Over-Advanced >> Notes
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DTC P0014-00; Hydraulic Variable Valve Timing Control System: Over-Advanced: Notes

NOTE:
  • To determine the malfunctioning part, proceed with the diagnostics from "Function Inspection Using M-MDS".

Details On DTCs

DETECTION CONDITION AND POSSIBLE CAUSE

DESCRIPTION Hydraulic variable valve timing control system: over-advanced
DETECTION CONDITION Determination conditions
  • For the advance amount from the maximum exhaust valve retard position, a condition in which the actual advance amount is larger than the target value continues for a specified period of time.
Preconditions
  • Engine coolant temperature: 30 °C {86 °F} or more*1
  • Hydraulic variable valve timing control: feedback mode
  • The following DTCs are not detected:
  • P0335:00, P0365:00
*1 : Value can be verified by displaying PIDs using M-MDS
Malfunction determination period
  • 5 s period
Drive cycle
  • 2
Self test type
  • CMDTC self test
Sensor used
  • CKP sensor
  • Exhaust CMP sensor
FAIL-SAFE FUNCTION
  • Not applicable
VEHICLE STATUS WHEN DTCs ARE OUTPUT
  • The check engine light may be illuminated depending on the condition.
POSSIBLE CAUSE
  • OCV malfunction
    • Spool valve in OCV is stuck in advanced position
  • Hydraulic variable valve timing actuator malfunction
  • Timing chain malfunction
    • Poor assembly of timing chain
      • Looseness or jumping
  • Mis-detection of exhaust CMP sensor
  • Engine oil malfunction
    • Use of unspecified engine oil
    • Low engine oil level
    • Low engine oil pressure
      • Engine oil runners are clogged or have leakage
  • PCM malfunction