Details On DTCs
WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
| DESCRIPTION |
Hydraulic variable valve timing control system: over-advanced |
| DETECTION CONDITION |
Determination conditions |
- A condition in which the actual exhaust valve timing advances (excess advance) compared to the target exhaust valve timing continues for the specified period.
|
| Preconditions |
- Battery voltage: above 11 V *1
- Engine coolant temperature: 30 °C {86 °F} or more *1
- Hydraulic variable valve timing control: feedback mode
- The following DTCs are not detected:
- *1
: Value can be verified by displaying PIDs using M-MDS
|
| Malfunction determination period |
|
| Drive cycle |
|
| Self test type |
|
| Sensor used |
- CKP sensor
- Exhaust CMP sensor
|
| FAIL-SAFE FUNCTION |
|
| 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
|