DTC P0501: Vehicle Speed Sensor Range/Performance: General Description

The Wheel Speed Sensor (WSS) generates a WAVE FORM with a frequency according to the speed of the vehicle. The signal generated by the WSS informs the PCM not only if the vehicle speed is low or high but also is stopped the vehicle or not. The PCM uses this signal to control the fuel injection, ignition timing, transmission/transaxle shift scheduling and torque converter clutch scheduling. Also the WSS signal is used to detect rough road driving condition.