P0340
Camshaft Position Sensor A Circuit Bank 1 or Single Sensor
Powertrain · Generic (all makes)System: Electrical/Circuits + Ignition
Fix within days. Damage or fuel waste builds up.
Likely causes
- Failed camshaft position sensor
- Timing chain or belt stretched or skipped
- Wiring fault
What to check first
Replace the cam sensor after checking wiring. If cam/crank correlation codes also appear, check the timing chain or belt.
Typical repair cost
$100 – $450
Independent-shop parts and labor for the usual fix. Your price depends on the actual cause and the vehicle.
Next step
General information, not a diagnosis of your vehicle. Repair costs are typical shop ranges, not quotes.