General Information

Engine Control
P0340 Camshaft Position Sensor - General Information

Component Location





General Description

The Camshaft Position Sensor (CMPS) is a sensor that detects the compression TDC of the NO. 1 cylinder. The CMPS consists of a hall type sensor and a target on the end of the camshaft. When the target triggers the sensor, the sensor voltage is 5V. If not, the sensor voltage is 0V. These CMPS signal is sent to the PCM and the PCM uses the CMPS signal for synchronizing the sequential fuel injectors.

DTC Description

If PCM detects that cam event signal count is over 3 under detecting condition, PCM sets P0340.

DTC Detecting Condition





Diagnostic Circuit Diagram





Signal Waveform & Data




Fig.1) Normal waveforms of CKPS & CMPS