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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls - Powertrain DTC Charts & Descriptions - (Hybrid)) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> DTC P2279: Intake Air System Leak

DTC P2279: Intake Air System Leak

WARNING: This page is about a different variant/trim than selected.
P2279 - INTAKE AIR SYSTEM LEAK

Description:  This DTC indicates the engine was overproducing torque and overcharging the traction battery when its operating temperature was within normal range. To protect the traction battery the powertrain control module (PCM) disabled the fuel injectors.
Possible Causes: 
  • Intake air system leak
  • Positive crankcase ventilation (PCV) system
Diagnostic Aids:  This DTC is informational only. Check for any unmetered air leaks. Diagnose any intake air system related DTCs.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All - GO to PINPOINT TEST HU . GO to PINPOINT TEST HU .