P008F OBD II Trouble Code Engine Coolant Temperature/Fuel Temperature Correlation

How to easily diagnose, repair, and info on causes of a P008F diagnostic code which indicates a correlation problem between the engine coolant and fuel temperature sensor readings.

Symptoms of P008F OBD II Trouble Code

  • Reduced engine performance
  • Diminished fuel efficiency
  • Excessively rich exhaust

Common Causes of P008F OBD II Trouble Code

  • Faulty ECT sensor
  • Bad fuel temperature sensor
  • Open or shorted wiring or connector
  • PCM or PCM programming error

Severity of P008F OBD II Trouble Code

Since ECT and fuel temperature are so important to fuel delivery and ignition timing strategy, a stored code P008F should be addressed with some degree of urgency.