P0088 OBD II Trouble Code Fuel Rail/System Pressure - Too High

Symptoms of P0088 OBD II Trouble Code

  • Delayed startup, especially when the engine is cool
  • Black smoke from the exhaust system
  • Diminished fuel efficiency
  • Spark plug fouling is possible in extreme circumstances
  • Engine misfire codes and idle control codes may accompany a P0088

Common Causes of P0088 OBD II Trouble Code

  • Defective fuel pressure regulator
  • Faulty fuel rail pressure sensor
  • Shorted or open wiring and/or connectors in the fuel rail pressure sensor circuit
  • A bad PCM or a PCM programming error

Severity of P0088 OBD II Trouble Code

Since excessive fuel pressure can lead to a wide variety of drivability issues and cause internal engine damage, a code P0088 should be investigated with some degree of urgency. Symptoms of a this engine code may include: