OBD codes / P0340
P0340
SeriousCamshaft Position Sensor A Circuit Malfunction (Bank 1)
Address promptly — can worsen or affect drivability.
Likely causes
- faulty cam sensor
- wiring
- timing issue
Common fixes
- replace camshaft position sensor
- inspect wiring
Seeing P0340 on your car? Get a diagnosis specific to your exact year, make and model.
Diagnose P0340 for my vehicleGeneric OBD-II reference. Manufacturer-specific behavior varies — confirm with a scan tool and, for safety-related codes, a professional inspection.