P1349 – VVT System Malfunction (Oil Control Valve) (Toyota)
Description
The ECM detected improper operation of the VVT oil control valve affecting camshaft timing response.
Want to confirm the real cause of this fault code?
A high-quality OBD2 scanner gives you live data, fuel trims, sensor readings and freeze-frame information — exactly what you need to verify the root cause of this code with confidence.
View Recommended ScannersSymptoms
- Rough idle
- Poor acceleration
- Engine hesitation
- Reduced power
- Check engine light
Causes
- Stuck OCV valve
- Dirty or low oil
- Clogged oil passages
- Weak oil pressure
- ECM VVT control fault
Diagnosis
- Check oil level
- Inspect OCV movement
- Measure oil pressure
- Scan VVT data
- Check cam timing
Repair
- Replace OCV valve
- Change oil
- Clean oil passages
- Repair cam timing
