P0168 OBD II Trouble Code Fuel Temperature Too High

Symptoms of P0168 OBD II Trouble Code

  • Usually no symptoms accompany a code P0168
  • Other fuel composition codes may be present
  • MIL illumination will eventually occur

Common Causes of P0168 OBD II Trouble Code

  • Defective fuel composition/temperature sensor
  • A bad ambient temperature sensor
  • Faulty intake air temperature sensor
  • Open, shorted, or damaged wiring or connectors
  • PCM or a PCM programing error

Severity of P0168 OBD II Trouble Code

A stored code P0168 should be treated as severe because fuel temperature is used by the PCM to calculate fuel delivery strategy in flex fuel vehicles.