P0339 - Crankshaft Position Sensor 'A' Circuit Intermittent

System Information

The Crankshaft Position sensor is used by the ECM to monitor the Engine speed / Crankshaft position. The system will normally use a sensor that produces a signal based on teeth / cut-outs on either the flywheel or crankshaft pulley. The ECM has detected a signal that is intermittent, the signal is most likely going out of normal range or is erratic when compared to other sensor inputs.

Recommended Tests

It is recommended to check the following systems and components.