DTC P0341: Camshaft Position Sensor Circuit Performance: Description

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

The Camshaft Position (CMP) sensor is a hall effect type sensor. The sensor produces one signal for each revolution of the camshaft in order to control the sequential fuel injection. The CMP sensor is designed to detect changes in a magnetic field. The Powertrain Control Module (PCM) supplies the CMP sensor with the following circuits:

A 12-volt reference circuit.
A low reference circuit.
A signal circuit.

The CMP sensor produces a magnetic field whenever the ignition is ON. The CMP sensor is mounted near a reluctor wheel that is attached to the distributor shaft. When the distributor shaft rotates, and the reluctor wheel tooth passes by the CMP sensor, there is a change in the magnetic field. The CMP sensor converts each change in the magnetic field into a PULSE. If the PCM does not detect the CMP signal while the engine is running, Diagnostic Trouble Code (DTC) P0341 will set.