P0189 OBD II Trouble Code Fuel Temperature Sensor B Circuit Intermittent

Symptoms of P0189 OBD II Trouble Code

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

Common Causes of P0189 OBD II Trouble Code

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

Severity of P0189 OBD II Trouble Code

This code should be treated as severe because fuel temperature is used to calculate fuel delivery strategy in flex fuel vehicles. Symptoms of a P0189 code may include: