DTC P1335: CRANKSHAFT POSITION SENSOR CIRCUIT MALFUNCTION (DURING ENGINE RUNNING) Lexus IS I

For diagnostic testing procedures, see DTC P0335 OR DTC P1335 .

Circuit Description

CMP sensor consist of a 3-tooth signal plate and a pick-up coil. Signal plate is mounted on camshaft. Crankshaft Position (CKP) sensor consists of a pick-up coil and signal plate. Signal plate has 34-teeth and is located on crankshaft timing pulley. DTC is set when there is a deviation between CMP sensor signal and CKP sensor signal. Possible causes are

1. Mechanical system malfunction (timing belt stretched or timing belt teeth jumped).
2. Faulty ECM.

Diagnostic Aids

Using scan tool, read freeze frame data. Freeze frame records engine conditions when malfunction is detected.