Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit Description
The Variable Valve Timing (VVT) sensor consists of a signal plate and pick-up coil. The signal plate has 3 teeth and is mounted on each camshaft timing gear. VVT sensor is mounted on exhaust side of cylinder head, on flywheel side of engine. The VVT sensor provides feedback to ECM in order to control intake valve timing. DTC P1346 is for bank No. 1. DTC P1351 is for bank No. 2. DTC is set when ECM detects deviation in crankshaft position sensor and VVT sensor. Possible causes are:
- Mechanical system malfunction such as the timing belt stretched or jumped teeth.
- Defective ECM.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.