638

UnclassifiedGeneral

What This Code Means

MIL light on; Engine shut down

Possible Causes

  • •Circuit voltage anomaly between throttle connector signal terminal and engine ground
  • •Damage, corrosion, or contamination on throttle wire harness connector terminals
  • •Faulty ECM
  • •Foreign object in throttle bore
  • •Lack of continuity between throttle connector signal ground and ECM signal ground circuit terminals
  • •Throttle command is 20% less than actual throttle position for 200ms or longer

Suggested Actions

  1. 1Inspect the throttle wire harness connector terminals for damage, corrosion or contamination
  2. 2Perform On-Board (OBD) System Check
  3. 3Remove foreign object from throttle bore
  4. 4Repair circuit as necessary (refer to Wiring Repairs in Engine Electrical)
  5. 5Replace ECM

Related Power Solutions, Inc. Fault Codes

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