P0345 — Camshaft Position Sensor A Circuit (Bank 2)
High severityWhat it means
P0345 is stored when the engine control unit sees a fault involving the camshaft position (CMP) sensor circuit on bank 2. The camshaft position sensor lets the control unit identify which cylinder is on its firing stroke, which is needed for sequential injection and ignition. The control unit has flagged this circuit or signal as outside its normal operating range.
Common symptoms
- Hard starting or long cranking
- Stalling or misfire
- Reduced power
Likely causes
- A wiring, connector or ground problem in the circuit
- A failed sensor or actuator in the circuit
- Faulty camshaft position sensor
- Timing chain/belt wear or a VVT issue affecting cam timing
What to check first
- Inspect the connector and wiring for damage, corrosion or loose pins
- Inspect the sensor connector and wiring
- Check for cam/crank correlation codes and timing noise
Can you keep driving?
May cause hard starting or stalling; if it runs poorly or makes timing noise, avoid driving until checked.
Frequently asked questions
What is the most common cause of P0345?
The most likely cause is: A wiring, connector or ground problem in the circuit. Several other faults can set P0345 as well, so confirm the real cause with live data and the checks above before replacing any parts.
Can I just clear P0345 and keep driving?
Clearing P0345 with an OBD2 scanner turns the warning light off, but if the underlying fault has not been repaired the code will usually come back within a few drive cycles. Fix the cause first, then clear the code to confirm the repair worked.
How serious is P0345?
P0345 is a high-severity code. Diagnose and repair it as soon as possible, because continuing to drive can cause further damage or leave you stranded.
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