P0188 OBD II Trouble Code Fuel Temperature Sensor B Circuit High Input

Symptoms of P0188 OBD II Trouble Code

  • Possible MIL illumination
  • There may be no obvious symptoms
  • Other fuel composition codes may be present

Common Causes of P0188 OBD II Trouble Code

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

Severity of P0188 OBD II Trouble Code

Due to the fact that fuel temperature is used to calculate fuel delivery strategy in flex fuel vehicles, this code should be treated as severe. Symptoms of a P0188 code may include: