P0148 OBD II Trouble Code Fuel Delivery Error

Symptoms of P0148 OBD II Trouble Code

  • Decreased fuel efficiency
  • Diminished engine performance
  • Excessive black smoke from exhaust
  • The strong odor of diesel fuel
  • Other fuel and engine drivability related codes may be stored

Common Causes of P0148 OBD II Trouble Code

  • High pressure fuel system leak
  • Defective fuel pressure sensor
  • Faulty fuel control actuator
  • Open or shorted high pressure fuel supply system wiring and/or connectors
  • Bad fuel pump
  • Malfunctioning fuel pump or PCM power supply relay
  • PCM or PCM programming error

Severity of P0148 OBD II Trouble Code

A fuel delivery error may lead to reduced engine performance and possibly engine damage, so a code P0148 should be addressed with some degree of urgency (especially if a strong fuel odor accompanies it).