What Does P2279 Code Mean?

OBD-II Code P2279 is defined as a Intake Air System Leak

The engine's control module ((PCM) uses multiple sensors to determine how much air is flowing through the engine at any given time. If the PCM sees more air flowing through the engine than should be when the throttle plate is closed (at idle), the PCM will set code P2279.

P2279 Symptoms

  • Decreased engine performance
  • Increased fuel consumption

Common Problems That Trigger the P2279 Code

  • Idle Air Control (IAC) valve failure
  • Leaking intake manifold gasket
  • Mass Air Flow (MAF) sensor failure
  • Positive crankcase ventilation (PCV) valve failure
  • Vacuum leak

Common Repairs Needed for the P2279 Code

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