The OBD-II code P2279 refers to an Intake Air System Leak. This code is triggered when the engine’s control module (PCM) detects an unexpected amount of air entering the engine while the throttle plate is closed, typically during idle.
What Does the P2279 Code Mean?
OBD-II Code P2279 is defined as an Intake Air System Leak. This indicates that there is a discrepancy in the air intake system that may affect engine performance and efficiency.
What Causes the P2279 Code?
The P2279 code can be caused by several factors, including:
- Idle Air Control (IAC) valve failure
- Leaking intake manifold gasket
- Mass Air Flow (MAF) sensor failure
- Positive Crankcase Ventilation (PCV) valve failure
- Vacuum leaks in the intake system
What Are the Symptoms of the P2279 Code?
Common symptoms associated with the P2279 code include:
- Decreased engine performance
- Increased fuel consumption
- Rough idle or stalling
- Check Engine Light illuminated
How Serious Is the P2279 Code?
The severity of the P2279 code is considered urgent. It indicates significant malfunctions that can not only lead to decreased vehicle performance but may also cause severe damage to the engine if left unaddressed.
How to Diagnose the P2279 Code
Diagnosing the P2279 code involves the following steps:
- Use an OBD-II scanner to confirm the P2279 code and check for any related codes.
- Inspect the intake system for any visible signs of leaks or damage.
- Test the IAC valve, MAF sensor, and PCV valve for proper operation.
- Perform a smoke test to detect hidden vacuum leaks.
Common Repairs for the P2279 Code
Repairs for the P2279 code may include:
- Replacing the intake manifold gasket
- Repairing or replacing the IAC valve
- Repairing or replacing the MAF sensor
- Fixing any vacuum leaks found during diagnosis
How Much Does It Cost to Fix the P2279 Code?
The cost to fix the P2279 code can vary widely depending on the cause of the issue and the labor rates in your area. On average, repairs can range from $100 to $500, with more extensive repairs potentially costing more if multiple components need replacement.
Can I Fix the P2279 Code Myself?
While some enthusiasts may be able to tackle repairs related to the P2279 code, it is essential to have a good understanding of automotive systems. If you are unsure, it’s recommended to consult with a professional mechanic to ensure a proper diagnosis and repair.
