Common Checks
- Inspect the cam sensor connector and harness.
- Check related fuses, sensor power, ground, and signal continuity.
- Confirm timing-chain or cam timing issues are not creating related symptoms.
Diagnostic trouble code
P0340 Camshaft Position Sensor Circuit
The PCM sees an electrical or signal fault in a camshaft position sensor circuit.
Air Metering & Sensor Input CodesCommon Repairs
- Repair sensor wiring or connector faults.
- Replace the camshaft position sensor if circuit tests identify it as failed.
- Address mechanical timing faults if cam/crank correlation data points there.
Mustang Notes
- Modern variable-cam engines can set additional cam timing codes that should be diagnosed together.
Model-Year Applicability
Listed for 1996 and newer traditional gasoline Mustang pages in this first-pass catalog. Engine, calibration, and Ford-specific codes may narrow that range as more service data is added.