P2279 OBD-II: Intake Air System Leak
P2279 Severity
Should you fix P2279 yourself?
Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.
Proper diagnosis will save you time and money on unnecessary repairs.
Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.
What causes OBD-II fault code P2279?
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.
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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
Ask our experts about P2279.
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