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P0345

Camshaft Position Sensor A Circuit Malfunction Bank 2

The engine computer is not getting the correct signal from the bank 2 camshaft position sensor circuit. This can cause hard starting, rough running, stalling, or poor performance. The problem is often a bad sensor, wiring issue, or connector problem.

Severity3/5 Moderate
Can I drive?⚠ With caution

You may be able to drive short distances, but the engine can stall, run rough, or have reduced power. Diagnose and repair it soon, especially if the check engine light is flashing or the engine is misfiring.

DIY
$20–$120
Shop
$120–$500
Difficulty
intermediate

What It Means

P0345 indicates a malfunction in the camshaft position sensor A circuit for bank 2. The PCM is seeing an incorrect, missing, or unreliable signal used to determine camshaft position and engine timing. This may be caused by a failed sensor, damaged wiring, poor connector contact, timing issues, or a fault in the PCM input circuit.

Symptoms

Common Causes

1. Faulty bank 2 camshaft position sensorhigh
2. Damaged, loose, or corroded sensor connectorhigh
3. Broken, shorted, or rubbed-through wiring in the cam sensor circuithigh
4. Oil contamination inside the sensor or connectormedium
5. Blown fuse, poor power supply, or bad ground to the sensor circuitmedium
6. Failed reluctor wheel, timing chain issue, or mechanical cam timing problemmedium
7. Problem with the PCM or its input circuitlow

Related Codes

FAQ

Is P0345 the same as a bad camshaft sensor?

Not always. The code means there is a problem in the bank 2 camshaft sensor circuit, which can be caused by the sensor, wiring, connector, or timing issue.

What bank is bank 2?

Bank 2 is the side of the engine that does not contain cylinder 1. On V-style engines, it is the opposite cylinder bank from bank 1.

Will P0345 cause a no-start condition?

It can on some vehicles. Many engines will still start, but some may crank longer, run poorly, or stall if the camshaft signal is lost.

Should I replace the sensor first?

Usually yes, if the wiring and connector look good. But always check for damaged wiring, poor connections, or oil contamination before replacing parts.