P0340
DTC P0340 Camshaft Position Sensor Circuit MalfunctionDESCRIPTION
The Camshaft Position (CMP) sensor senses the Top Dead Center (TDC) point of the #1 cylinder in the compression stroke. The CMP sensor signal allows the Engine Control Module (ECM) to determine the fuel injector sequence starting point.
FAILURE CONDITIONS
[FOR P0342]
The ECM will set P0342 and the Malfunction Indicator Lamp (MIL) will turn on if during two driving cycles there is more than one CMP sensor signal during two engine revolutions when the engine speed is above 600 RPM. This code indicates unexpected camshaft position readings by the CMP sensor or ECM when the engine is rotating.
[FOR P0343]
The ECM will set P0343 and the Malfunction Indicator Lamp (MIL) will turn on if during two driving cycles there is no CMP sensor signal within 200 engine revolutions when the engine speed is above 600 RPM. This code indicates unexpected camshaft position readings by the CMP sensor or ECM when the engine is rotating.
Circuit Diagram:
Test Procedure Part 1:
Test Procedure Part 2:
