Details On DTCs

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

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

Malfunction determination period

5 s period

Drive cycle

Self test type

CMDTC self test

Sensor used

CKP sensor
Exhaust CMP sensor

FAIL-SAFE FUNCTION

Not applicable

VEHICLE STATUS WHEN DTCs ARE OUTPUT

Illuminates check engine light.

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

⁽¹⁾	Value can be verified by displaying PIDs using M-MDS