What does the P0500 error code mean?
The P0500 diagnostic trouble code stands for "Vehicle Speed Sensor (VSS) Malfunction." This code is triggered when the engine control module fails to receive a proper signal from the vehicle speed sensor. The vehicle speed sensor measures the speed of the vehicle and transmits this information to the engine control module, which uses it for functions such as transmission control, cruise control and speedometer operation.
Why is the P0500 issue important?
A malfunctioning vehicle speed sensor can disrupt critical vehicle functions, including transmission shifting and antilock braking system (ABS) performance. Additionally, inaccurate speed readings can impair safety and lead to further mechanical problems. Addressing this issue promptly ensures the vehicle operates efficiently and safely.
Can I safely drive my car with this error code?
Driving with the P0500 code is possible but not recommended. A faulty vehicle speed sensor can cause inaccurate speed readings, improper transmission shifts and compromised braking performance, especially if the ABS is affected. This issue can lead to unsafe driving conditions and potential damage to other vehicle components over time.
Common symptoms of the P0500 error code
- Illuminated check engine light
- Nonfunctional or erratic speedometer readings
- Improper or harsh transmission shifts
- Cruise control not functioning
- Illuminated warning light for antilock braking system (in some cases)
- Decreased fuel efficiency
- Hesitation during acceleration
Diagnosing the P0500 error code
Diagnosing the P0500 code involves the following steps:
- Scan for codes: Use an OBD-II scanner to confirm the P0500 code and check for related codes.
- Inspect the vehicle speed sensor: Examine the vehicle speed sensor for damage, loose connections or corrosion.
- Test the vehicle speed sensor: Use a multimeter to measure the sensor's resistance and signal output while the vehicle is in motion.
- Inspect wiring and connectors: Check for damaged, frayed or disconnected wires in the vehicle speed sensor circuit.
- Examine related systems: Check the transmission, engine control module and ABS components for any issues contributing to the error.
- Review live data: Analyze live data from the OBD-II scanner to ensure the vehicle speed sensor is sending accurate signals.
Repairing the P0500 error code
Repairing the P0500 code typically involves:
- Replacing a faulty vehicle speed sensor.
- Repairing or replacing damaged or corroded wiring and connectors in the vehicle speed sensor circuit.
- Cleaning or reseating the vehicle speed sensor connection to ensure a proper signal.
- Updating or reprogramming the engine control module if necessary.
- Clearing the code and performing a test drive to verify the repair's success.
Related reading
Follow the link below to reach our diagnostic check engine trouble codes catalog:
On-board diagnostics (OBD-II) trouble code directory