DTC P0500: Vehicle Speed Sensor (VSS) A

P0500 - VEHICLE SPEED SENSOR (VSS) A

Description: Indicates the PCM detected an error in the vehicle speed information. Vehicle speed data is received from either the VSS or the anti-lock brake system (ABS) control module. If the engine RPM is above the torque converter stall speed (automatic transmission) and the engine load is high, it can be inferred that the vehicle must be moving. If there is insufficient vehicle speed data input, a concern is indicated and this DTC sets. On most vehicle applications the malfunction indicator lamp (MIL) illuminates when this DTC sets.
Possible Causes: VSS+/VSS- circuit open VSS circuit short to ground VSS circuit short to voltage Damaged drive mechanism for VSS Damaged VSS Damaged wheel speed sensors Damaged wheel speed sensor harness circuits
Diagnostic Aids: Monitor the VSS PID while driving the vehicle. This DTC sets when the PCM detects a sudden loss of vehicle speed signal over a period of time. If vehicle speed data is lost, check the source of the vehicle speed input: VSS or ABS.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
F-Series Super Duty, Motorhome / Stripped Chassis / Step Van	GO to PINPOINT TEST DF .
Manual Transmission	GO to PINPOINT TEST DP .
Automatic Transmission	The PCM uses information from the ABS module and the transmission control module (TCM) to calculate vehicle speed. Check these modules for DTCs.