Advanced Diagnostics

Advanced Diagnostics

DTC P0340: Camshaft Position (CMP) Sensor A No Signal






General Description
Camshaft position (CMP) sensor A detects the intake camshaft timing and sends pulsing signals to the powertrain control module (PCM). The PCM determines the advance or the retard of the camshaft timing according to the signals from the crankshaft position (CKP) sensor and CMP sensor A. If no pulsing signals are detected from CMP sensor A, a malfunction is detected and a DTC is stored.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status






Enable Conditions






Malfunction Threshold
No signals from CMP sensor A are detected at least 25 times in succession.

Diagnosis Details

Conditions for illuminating the MIL
When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the PCM memory.

Conditions for clearing the MIL
The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.
The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.