P2279 Chevrolet Code - Intake Air Duct Air Leak
Quick Answer
The Engine Control Module (ECM) monitors the volume of air consumed at idle speed. Common causes include Check for intake leaks, Faulty Mass Air Flow (MAF) sensor, Faulty Positive Crankcase Ventilation (PCV) system. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P2279 Chevrolet indicates Intake Air Duct Air Leak.
- Common causes
- Common causes include Check for intake leaks, Faulty Mass Air Flow (MAF) sensor, Faulty Positive Crankcase Ventilation (PCV) system.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P2279 Chevrolet Description
What are the Possible Causes of the DTC P2279 Chevrolet?
- Check for intake leaks
- Faulty Mass Air Flow (MAF) sensor
- Faulty Positive Crankcase Ventilation (PCV) system
How to Fix the DTC P2279 Chevrolet?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2279 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P2279 Chevrolet Code
1. What does the OBDII code P2279 mean on a Chevrolet?
P2279 indicates an "Intake Air Duct Air Leak," meaning there's a vacuum or air leak in the intake system, which can cause unmetered air to enter the engine.
2. What are the symptoms of a P2279 code on a Chevrolet?
Symptoms may include rough idling, decreased engine performance, stalling, poor fuel economy, or the Check Engine Light turning on.
3. What are common causes of a P2279 code on a Chevrolet?
Common causes include a cracked or loose intake hose, damaged intake manifold gaskets, a faulty PCV valve, or leaks around the throttle body.
4. Can a dirty air filter cause a P2279 code on a Chevrolet?
While a dirty air filter itself might not cause P2279, it can contribute to intake system issues that exacerbate air leaks.
5. How do I diagnose a P2279 code on my Chevrolet?
Start by inspecting the intake air duct, hoses, and connections for visible cracks or leaks. You can also use a smoke test or listen for hissing sounds to detect air leaks.
6. How serious is the P2279 code on a Chevrolet?
P2279 can lead to poor engine performance and potential long-term damage if ignored. It should be addressed promptly to prevent further issues.
7. Can I drive my Chevrolet with a P2279 code?
Driving with a P2279 code is not recommended, as it can cause rough running, reduced fuel efficiency, and potential damage to engine components.
8. How much does it cost to fix a P2279 code on a Chevrolet?
Repair costs vary depending on the issue; fixing a loose hose may cost very little, while replacing intake manifold gaskets or other components could range from $200 to $600 or more.
9. Can the P2279 code trigger other fault codes on a Chevrolet?
Yes, P2279 can trigger other codes related to fuel and air mixture imbalances, such as misfire or oxygen sensor codes.
10. What tools are needed to fix a P2279 code on a Chevrolet?
Basic tools include a socket set, screwdrivers, and a scan tool. A smoke machine or soapy water may also help pinpoint leaks in the intake system.
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