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
Variable Valve Timing (VVT) sensor consists of a signal plate and pick-up coil. Signal plate has 3 teeth and is mounted on each camshaft sprocket. VVT sensor provides feedback to ECM in order to control intake valve timing. DTC is set when ECM does not sense VVT sensor signal during cranking for 4 or more seconds. DTC is also set if ECM does not sense VVT sensor signal with engine speed at 600 RPM or more for 5 or more seconds. DTC is also set if ECM senses VVT sensor signal 5 times while crankshaft rotates 2 times. Possible causes are:
- VVT sensor circuit is open or shorted.
- Defective VVT sensor.
- Defective ECM.
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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.