P2279 Fault Code

Intake Air System Leak

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2279 code indicates that there is an intake air system leak detected by the vehicle's Engine Control Module (ECM). This leak can occur in various parts of the intake air system, which includes components like the intake manifold, air intake ducts, or vacuum hoses. A leak in this system can lead to incorrect air-fuel mixture and negatively affect the engine performance.

What are the symptoms of the P2279 code?

Symptoms that may indicate a P2279 code include:

• Rough idling or stalling of the engine.
• Decrease in engine power and acceleration.
• Check Engine Light illuminated on the dashboard.
• Increased fuel consumption and emissions.
• Unusual engine noises or air intake sounds.

What causes the P2279 code?

Common causes of the P2279 code include:

• Cracked or damaged intake manifold or intake ducts.
• Loose or disconnected vacuum hoses.
• Malfunctioning intake air temperature sensor.
• Faulty mass air flow (MAF) sensor.
• Poorly seated or damaged gaskets.

How to fix P2279?

To resolve the P2279 code, the following steps are typically recommended:

• Inspect the intake manifold and ducts for any visible cracks or damage.
• Check all vacuum hoses for proper connection and leaks.
• Replace any faulty sensors such as the intake air temperature or MAF sensor.
• Repair or replace damaged gaskets to ensure a proper seal.
• Clear the codes and perform a test drive to verify if the issue is resolved.