P0500 - Vehicle Speed Sensor A Circuit
P0500 is a generic powertrain diagnostic trouble code indicating Vehicle Speed Sensor A Circuit. It relates to the Vehicle Speed / Idle Control / Aux Inputs system.
DTC Breakdown (SAE J2012)
| System | Powertrain (P) |
| Type | Generic |
| Subsystem | Vehicle Speed / Idle Control / Aux Inputs |
| Fault Index | 00 |
| Standard | SAE J2012 / ISO 15031-6 |
What does diagnostic code P0500 mean?
The powertrain control module logged P0500 after detecting a malfunction in the vehicle speed sensor (VSS) signal circuit.
Severity Level & Driveability Details
Severity: Moderate
A failed VSS will deactivate cruise control and may cause ABS light activation or erratic automatic transmission shifting.
Common Symptoms of P0500
- Erratic or non-functional speedometer readings.
- Harsh or delayed automatic transmission gear shifts.
- Cruise control failing to engage.
- Check engine light and ABS warning lights illuminated.
Typical Causes for P0500
- Failed vehicle speed sensor (VSS).
- Damaged or corroded wiring connector at the speed sensor.
- Worn or damaged drive gear inside the transmission tail housing.
- Blown fuse for the speed sensor circuit.
Diagnostic and Troubleshooting Steps
Verify speedometer operation. Use a scan tool to monitor VSS signal while driving; if it reads zero while moving, test sensor power, ground, and signal output with a multimeter.
Typical Repairs and Fixes
- Replacing the vehicle speed sensor (VSS).
- Repairing damaged wiring harness or connector plug at the VSS.
- Replacing the worn transmission drive gear.
- Replacing the blown circuit fuse.
Sensor Location & Parts Involved
The VSS is mounted on the transmission tail shaft housing or wheel hubs depending on vehicle design.
Clearing Code & Recurrence
Clear code and drive the vehicle to verify a valid speed signal is received.
Emissions & Smog Inspection Impact
May prevent transmission torque converter lockup, reducing highway fuel efficiency.
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Related Diagnostic Codes
Sources & References
This diagnostic guide is compiled and verified against the following authority sources:
- EPA driveability standards
- NHTSA complaints portal
Frequently Asked Questions about P0500
What does the vehicle speed sensor malfunction code P0500 mean?
The powertrain control module logged P0500 after detecting a malfunction in the vehicle speed sensor (VSS) signal circuit.
Is it safe to drive with the vehicle speed sensor malfunction code P0500 active?
Yes, but transmission shifting may be affected.
How much does it cost to repair a vehicle speed sensor malfunction code P0500 fault?
Parts for the speed sensor are $40-$100. Total repair with labor is $120-$250.
What are the common causes of the vehicle speed sensor malfunction code P0500?
Trigger conditions for the vehicle speed sensor malfunction code P0500 include: Failed vehicle speed sensor (VSS)., Damaged or corroded wiring connector at the speed sensor., Worn or damaged drive gear inside the transmission tail housing..
Can I clear the check engine light for vehicle speed sensor malfunction code P0500?
Clear code and drive the vehicle to verify a valid speed signal is received.
Will the vehicle speed sensor malfunction code P0500 cause an inspection failure?
May prevent transmission torque converter lockup, reducing highway fuel efficiency.