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DTC P0500: Vehicle Speed Sensor (VSS) Malfunction

  1. If speedometer functions and indicates actual vehicle speed, turn ignition off and check for open circuit between PCM harness connector terminal C51-2-25 and VSS harness connector terminal No. 1 (Blue/Yellow wire). Repair as necessary and retest system. If circuit is okay, problem is intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article. If speedometer does not function properly, go to next step.
  2. Disconnect VSS harness connector from sensor. Turn ignition on and check for voltage between VSS harness connector terminals No. 2 (Black/Yellow wire) and No. 3 (Blue/Black wire). If voltage is between 10-14 volts, go to next step. If voltage is not as specified, check for open or short circuits in Blue/Black wire between VSS and main relay or Black/Yellow wire between VSS and ground. Repair as necessary and retest system.
  3. With ignition on and engine off, check for voltage between VSS harness connector terminals No. 1 (Blue/Yellow wire) and No. 2 (Black/Yellow wire). If voltage reading is 4 volts or more, go to next step. If voltage is less than 4 volts, go to step  5 .
  4. Remove VSS from transmission/transfer case. Check VSS drive- and driven gears for damage or excessive wear. Repair or replace as needed. If no problems were found, check for bent or damaged connector or terminals at VSS. If connector and terminals are okay, replace VSS and retest system.
  5. Turn ignition off. Remove combination meter and disconnect 16-pin connector. Turn ignition on. Check for voltage between VSS harness connector terminals No. 1 (Blue/Yellow wire) and No. 2 (Black/Yellow wire). If voltage reading is 4 volts or more, replace combination meter and retest system. If voltage is less than 4 volts, go to next step.
  6. If vehicle is not equipped with cruise control, go to next step. Turn ignition off. Unplug cruise control module harness connector. Turn ignition on. Check for voltage between VSS harness connector terminals No. 1 (Blue/Yellow wire) and No. 2 (Black/Yellow wire). If voltage reading is 4 volts or more, replace cruise control module and retest system. If voltage is less than 4 volts, go to next step.
  7. Check Blue/Yellow wire for open or short circuit between VSS, PCM, combination meter or cruise control module. Repair as necessary. If wiring and connections are okay, replace PCM and retest system.
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