OBD Codes List

Diagnostic reference · P0500

P0500

Vehicle Speed Sensor Malfunction

System
Speed and idle control (P code)
Lamp
Check Engine Light
Category
Powertrain - Computer and Auxiliary Controls

What it means

P0500 means Vehicle Speed Sensor Malfunction.

Where it lives

For P0500, the description names the sensor as the part involved.

Check these first

  • Faulty vehicle speed sensor (VSS)
  • Damaged wiring or connector
  • Poor sensor mount or air gap
  • Damaged speed sensor tone ring
  • Faulty ABS wheel speed sharing the signal

What to do next

  1. Inspect the VSS wiring and connector for damage
  2. Read vehicle speed signal with an OBD-II scanner during a road test
  3. Verify sensor mounting and tone ring condition
  4. Compare ABS wheel speed readings if available
  5. Replace the VSS if no signal is present at the PCM

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Updated

Generic SAE J2012 definition. Last updated 2026-08-30.