AutoCodesVolkswagen – P2279 Volkswagen

P2279 Volkswagen Code - Intake Air System Leak

Quick Answer

The Engine Control Module (ECM) has detected a vacuum leak into the engine. Common causes include Check for intake leaks, Faulty Mass Air Flow (MAF) sensor, Faulty 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 Volkswagen indicates Intake Air System Leak.
Common causes
Common causes include Check for intake leaks, Faulty Mass Air Flow (MAF) sensor, Faulty 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 58,706
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Jan 21, 2023
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Code P2279 Volkswagen Description

The Engine Control Module (ECM) has detected a vacuum leak into the engine. The ECM monitors the air passing through the Mass Air Flow (MAF) sensor, a vacuum leak means that unmetered air is entering the engine without passing through the MAF.
OBDII Code P2279 Volkswagen - Intake Air System Leak - AutoCodes.com
P2279 Volkswagen Code - Intake Air System Leak

What are the Possible Causes of the DTC P2279 Volkswagen?

  • Check for intake leaks
  • Faulty Mass Air Flow (MAF) sensor
  • Faulty PCV system

How to Fix the DTC P2279 Volkswagen?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2279 Volkswagen 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.

Need more information about the P2279 Volkswagen code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2279 Volkswagen Code

1. What are common symptoms of OBDII code P2279 in a Volkswagen related to an intake air system leak?

- Common symptoms include rough idling, decreased engine performance, reduced fuel efficiency, and potential stalling.

2. What are the possible causes of the OBDII code P2279 indicating an intake air system leak in a Volkswagen?

- Causes may include a cracked or loose intake manifold, damaged intake air hoses, faulty intake air temperature sensor, or a malfunctioning intake air control valve.

3. How can I diagnose an intake air system leak causing the P2279 code in my Volkswagen?

- You can perform a visual inspection of the intake system components, use a smoke machine to detect leaks, check for loose connections, and test sensors with a multimeter.

4. Can a dirty air filter trigger the OBDII code P2279 in a Volkswagen?

- Yes, a clogged or dirty air filter can disrupt the airflow, leading to incorrect sensor readings and triggering the P2279 code.

5. Is it safe to continue driving my Volkswagen with the OBDII code P2279 related to an intake air system leak?

- It is not recommended to drive extensively with this code as it can lead to further damage, reduced engine performance, and potential safety risks.

6. What are some DIY repair tips for fixing an intake air system leak causing the P2279 code in a Volkswagen?

- DIY repair tips include checking and tightening hose connections, replacing damaged hoses or gaskets, cleaning or replacing the air filter, and ensuring proper installation of intake components.

7. How much does it typically cost to repair an intake air system leak causing the P2279 code in a Volkswagen?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $500 for parts and labor.

8. Can a professional scan tool reset the OBDII code P2279 in a Volkswagen after repairing an intake air system leak?

- Yes, a professional scan tool can be used to clear the code after fixing the intake air system leak and verifying that the issue has been resolved.

9. Will an intake air system leak causing the P2279 code affect my Volkswagen's emissions and cause it to fail an emissions test?

- Yes, an intake air system leak can affect emissions by disrupting the air-fuel mixture, potentially causing the vehicle to fail an emissions test.

10. How often should I inspect my Volkswagen's intake air system to prevent issues like the P2279 code from occurring?

- It is recommended to inspect the intake air system during regular maintenance intervals or whenever you notice symptoms like poor engine performance or decreased fuel efficiency.

Discuss the causes and fixes for P2279 Volkswagen OBDII Code

  • where do i find the hose to replace for code 2279 on 2004 VW Beetle

  • Which hose?
    Unfortunately the P2279 code doesn't specified which hose is the problem, there are some test that needs to be perform to try to find the intake leak.

    What engine is on your Beetle?

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