P02A9 OBD II Trouble Code Cylinder 4 Injector Leaking

How to quickly diagnose, repair, and info on symptoms and causes of a P02A9 code that indicates a detected leaking fuel injector on cylinder 4.

Symptoms of P02A9 OBD II Trouble Code

  • Diminished engine performance
  • Reduced fuel efficiency
  • Lean exhaust codes
  • Misfire codes may also be stored

Common Causes of P02A9 OBD II Trouble Code

  • Defective and/or leaking fuel injector
  • Open or shorted fuel injector circuit(s)
  • Faulty oxygen sensor(s)
  • PCM or programming error
  • Mass air flow (MAF) or Manifold Air Pressure (MAP) sensor failure

Severity of P02A9 OBD II Trouble Code

A P02A9 should be classified as severe because a lean fuel condition could cause cylinder head or engine damage.