DTC P0502: Problem in CVT Speed Sensor Circuit: General Description

The vehicle speed sensor is attached to the outside of the transmission housing. The vehicle speed sensor detects the number of revolutions of the secondary driven gear and sends a pulsing signal to the powertrain control module (PCM). The PCM converts the pulsing signal into vehicle speed. If no pulses occur with the secondary driven gear rotating, the PCM detects a malfunction that may be caused by an open, a temporary open, or a short to ground. Based on the correlation between the vehicle speed sensor and the CVT output shaft (driven pulley) speed sensor, the PCM detects a malfunction and stores a DTC.