P2279 Honda Code - Intake Air System Leak
Quick Answer
The Positive Crankcase Ventilation (PCV) system reduces Hydrocarbon (HC) emissions. Common causes include Vacuum hose misinstalled, Throttle body air leak, Intake manifold air leak. 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 Honda indicates Intake Air System Leak.
- Common causes
- Common causes include Vacuum hose misinstalled, Throttle body air leak, Intake manifold air leak.
- 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 Honda Description
What are the Possible Causes of the DTC P2279 Honda?
- Vacuum hose misinstalled
- Throttle body air leak
- Intake manifold air leak
- Evaporative Emission (EVAP) canister purge valve failure
- Valve timing incorrect
- Manifold Absolute Pressure (MAP) Sensor range/performance problem
How to Fix the DTC P2279 Honda?
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
- 2008-2013 Honda Accord L4
- 2006-2013 Honda Accord V6
- 2014 Honda Accord Plug-In
- 2006-2013 Honda Civic
- 2006-2013 Honda Civic Hybrid
- 2005-2013 Honda CR-V
- 2007-2011 Honda Element
- 2005-2013 Honda Odyssey
- 2005-2013 Honda Pilot
- 2006-2013 Honda Ridgeline
Just cleaned or replaced the throttle body and now you've got one or more of these symptoms?
- Fluctuating idle
- MIL on with DTC P2279 (intake air system leak)
- MIL on with P0507 (idle control system RPM higher than expected)
What's probably happened is the throttle plate is now in a different position from the one the ECM/PCM had learned.
To fix this problem, the ECM/PCM has to relearn the current closed throttle position.
1. Make sure all electrical items (A/C, audio unit, defogger, lights, etc.) are off.
2. Start the engine with the shift lever in P, parking brake on, and hold the engine speed at 3,000 rpm until the radiator fan comes on.
3. Let the engine idle for 10 minutes with the throttle fully closed.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2279 Honda 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 Honda code?
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Need Help with the Code?
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Frequently Asked Questions about P2279 Honda Code
1. What are the common symptoms of OBDII code P2279 in a Honda related to an intake air system leak?
- Common symptoms include rough idling, decreased engine performance, stalling, and the illumination of the Check Engine Light.
2. What are some possible causes of OBDII code P2279 in a Honda indicating an intake air system leak?
- Potential causes may include a loose or damaged intake hose, a faulty intake manifold gasket, a cracked intake manifold, or a malfunctioning intake air control valve.
3. How can I diagnose an intake air system leak triggering OBDII code P2279 in my Honda?
- You can use a smoke machine to detect leaks, visually inspect the intake system for damage or loose connections, and perform a pressure test to pinpoint the source of the leak.
4. Are there any simple repair tips for fixing an intake air system leak causing OBDII code P2279 in a Honda?
- Ensure all intake hoses and connections are secure, replace any damaged components, such as gaskets or hoses, and reset the code to see if the issue resolves before pursuing more extensive repairs.
5. Can a dirty or faulty Mass Air Flow (MAF) sensor trigger OBDII code P2279 in a Honda?
- Yes, a dirty or malfunctioning MAF sensor can disrupt the air-fuel mixture and potentially lead to the intake air system leak indicated by OBDII code P2279.
6. Is it safe to continue driving my Honda with OBDII code P2279 related to an intake air system leak?
- It is not recommended to drive your vehicle with this code present, as it can cause engine performance issues and may lead to further damage if left unresolved.
7. How much does it typically cost to repair an intake air system leak causing OBDII code P2279 in a Honda?
- The cost of repairs can vary depending on the exact cause of the leak, but it may range from $100 to $500 or more, including parts and labor.
8. Can a DIY enthusiast with basic automotive knowledge fix an intake air system leak triggering OBDII code P2279 in a Honda?
- Yes, simple repairs like tightening connections or replacing damaged hoses can be done by DIYers, but more complex issues may require professional diagnosis and repair.
9. Will resetting the OBDII code P2279 in my Honda make the problem go away permanently?
- Resetting the code will clear the Check Engine Light temporarily, but if the underlying issue causing the intake air system leak is not addressed, the code is likely to reappear.
10. How often should I check the intake air system in my Honda to prevent OBDII code P2279 and related issues?
- It's a good practice to inspect the intake system during regular maintenance intervals or whenever you notice symptoms like poor engine performance to catch potential leaks early and prevent OBDII code P2279.
Discuss the causes and fixes for P2279 Honda OBDII Code
-
I have a 2006 Honda Ridgeline, and I keep getting code 2279 / 2279 P. I have erased it several times, and it would come back quickly sometimes, other time I would not be able to erase it. Recently I reset the valves, changed spark plugs, and disconnected the battery ground for about 1/2 hr and it all looked good, but then it appeared again while I was slowing down and pulling into my driveway (My driveway is on a highway, so I would have been slowing down from highway speed). I have looked for a vacuum leak, but could not see anything visually.
Any ideas would be Greatly appreciated
-
Just change the motor in my 2005 honda civic a day after the check light comes on code P2279
-
The P2279 code if for and Intake Air System Leak, you should start by checking for intake leaks, specially around the intake gasket.
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