General Information

P0335 Crankshaft Position Sensor \'A\' Circuit

General Information

Component Location





General Description

The Crankshaft Position Sensor (CKPS) is a hall effect type sensor that generates voltage using a sensor and a target wheel mounted on the crankshaft; there are 58 slots in the target wheel where one is longer than the others. When the slot in the wheel aligns with the sensor, the sensor voltage outputs low. When the metal (tooth) in the wheel aligns with the sensor, the sensor voltage outputs high. During one crankshaft rotation there are 58 rectangular signals and one longer signal. The PCM calculates engine RPM by using the sensor's signal and controls the injection duration and the ignition timing. Using the signal differences caused by the longer slot, the PCM identifies which cylinder is at top dead center.

DTC Description

The PCM sets DTC P0335 when the number of crankshaft teeth during one revolution is incorrect or crankshaft signal is missing while camshaft signal is detected.

DTC Detecting Condition





Diagnostic Circuit Diagram





Signal Waveform & Data








Fig 1,2) The CMPS falling (rising) edge is coincided with 3rd~5th tooth of the CKP from one longer signal (missing tooth)
** The square wave signal should be smooth and without any distortion.