DTC P0339: Crankshaft Position (CKP) Sensor Circuit Intermittent Interruption: General Description

The crankshaft position (CKP) sensor consists of a rotor and a semiconductor that detects rotor position. When the engine starts, the rotor turns and the magnetic flux in the semiconductor device changes. The changes of magnetic flux are converted into pulsing signals to the engine control module (ECM)/powertrain control module (PCM). The CKP sensor detects injection/ignition timing for each cylinder and engine speed. If an abnormal amount of pulsing signals from the CKP sensor are detected, a malfunction is detected and a DTC is stored.