P0345 indicates a problem in the camshaft position sensor circuit for Bank 2 (the cylinder bank opposite the #1 cylinder, typically on V6/V8 engines). The sensor monitors camshaft position for proper ignition timing and fuel injection; a fault can cause drivability issues and may prevent the engine from starting.
The sensor itself is the most common failure point due to heat, vibration, or age. It may fail electrically or mechanically.
Damaged, corroded, or loose wiring/connectors in the sensor circuit can cause intermittent or complete signal loss.
A slipped timing chain or belt can alter camshaft position relative to the crankshaft, triggering the code. This is more common on high-mileage engines.
PCM failure is very rare for this code. Only consider after thoroughly checking sensor, wiring, and timing.
It is not recommended. The engine may stall, run poorly, or fail to restart. Continuing to drive could cause further damage, especially if the timing chain has slipped.
No. While the sensor is the most common cause, wiring issues and timing chain problems are also frequent. Always diagnose before replacing parts.
Almost never. PCM failure is extremely rare for P0345. Most cases are solved by replacing the sensor, repairing wiring, or correcting engine timing.
Bank 2 refers to the side of the engine opposite the #1 cylinder. On V6/V8 engines, Bank 1 contains cylinder #1; Bank 2 is the other bank. On inline engines, there is only one bank.