DTC P0340: CMP Sensor Circuit Malfunction: Condition
WARNING: This page is about a different car, the 2002 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when Powertrain Control Module (PCM) does not detect input from Camshaft Position (CMP). This is a continuous monitor. MIL is illuminated when PCM detects malfunction during 2 consecutive drive cycles. Possible causes are:
- CMP sensor malfunction.
- CMP sensor dirty.
- Short or open circuit between CMP sensor and PCM.