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 CMP sensor consists of a one-tooth signal plate and a pick-up coil. Sensor is mounted in No. 3 timing belt cover in left front of engine. Signal plate is mounted to front of left bank camshaft. DTC P0340 is set when no camshaft position signal is received by ECM from CMP sensor during cranking. DTC P0340 is also set when no camshaft position signal is received by ECM from CMP sensor with engine speed of 600 RPM or more. Possible causes are:
- Open or short in CMP sensor circuit.
- Faulty CMP sensor.
- Faulty left bank camshaft pulley.
- Faulty 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.