P1346 – VVT Sensor Range/Performance (Toyota)
Description
The ECM detected incorrect camshaft timing or VVT sensor performance outside the expected range.
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View Recommended ScannersSymptoms
- Rough idle
- Engine shaking
- Poor acceleration
- Hesitation
- Check engine light
Causes
- Incorrect cam timing
- Faulty VVT sensor
- Stuck OCV valve
- Low oil pressure
- Timing chain stretch
Diagnosis
- Check cam timing
- Test VVT sensor
- Inspect OCV valve
- Measure oil pressure
- Scan VVT data
Repair
- Repair cam timing
- Replace VVT sensor
- Replace OCV valve
- Restore oil pressure
