P2279 Acura Code - Intake Air System Leak
Quick Answer
The P2279 diagnostic trouble code for Acura vehicles indicates an intake air system leak. Common causes include Loose or damaged intake hose, Faulty intake manifold gasket, Cracked air intake tube. 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 Acura indicates Intake Air System Leak.
- Common causes
- Common causes include Loose or damaged intake hose, Faulty intake manifold gasket, Cracked air intake tube.
- 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.
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Code P2279 Acura Description
The P2279 diagnostic trouble code for Acura vehicles indicates an intake air system leak. This means that there is an issue with the air entering the engine, which can have significant implications for the vehicle's performance and efficiency. The intake air system is crucial for the engine's operation, as it ensures the proper ratio of air to fuel for combustion. When there is a leak in this system, it can lead to an imbalance in the air-fuel mixture, causing the engine to run poorly and potentially causing damage over time.
Common Causes of P2279 Acura
- Loose or damaged intake hose
- Faulty intake manifold gasket
- Cracked air intake tube
- Malfunctioning PCV valve
- Clogged air filter
Symptoms of P2279 Acura
- Decreased engine performance
- Reduced fuel efficiency
- Rough idling
- Stalling
- Check engine light illuminated
How to Fix P2279 Acura
- Diagnose the specific cause of the intake air system leak using a diagnostic scan tool.
- Inspect the intake hose, intake manifold gasket, air intake tube, and PCV valve for damage or wear.
- Replace any damaged components, such as the intake hose or intake manifold gasket.
- Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.
- If the problem persists, further diagnosis may be necessary to identify any additional issues contributing to the intake air system leak.
Cost to Fix P2279 Acura
The typical repair costs for addressing an intake air system leak can range from $100 to $500, depending on the specific cause of the issue and the extent of the repairs needed. This estimate includes parts and labor, but it is important to note that prices can vary based on factors such as location, vehicle make and model, and the type of engine. Additionally, diagnostic time and labor rates at auto repair shops can impact the final cost, with rates typically ranging between $80 and $150 per hour. It is advisable to obtain a detailed quote from a trusted auto repair shop to get a more accurate estimate for this repair.
Tech Notes for P2279 Acura
- 2013-2014 Acura ILX
- 2003-2013 Acura MDX
- 2007-2013 Acura RDX
- 2005-2012 Acura RL
- 2014 Acura RLX
- 2004-2013 Acura TL
- 2004-2013 Acura TSX
- 2010-2012 Acura ZDX
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.
Need more information about the P2279 Acura code?
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Frequently Asked Questions about P2279 Acura Code
1. What are the common symptoms of OBDII code P2279 in an Acura related to an intake air system leak?
- Common symptoms include rough idle, reduced engine performance, and the illumination of the check engine light.
2. What are the typical causes of OBDII code P2279 in an Acura indicating an intake air system leak?
- The code is often triggered by a vacuum leak in the intake air system, a faulty intake manifold gasket, or a leak in the air intake duct.
3. How can I diagnose an intake air system leak causing OBDII code P2279 in my Acura?
- You can perform a visual inspection of the intake system components, use a smoke machine to detect leaks, or perform a vacuum leak test using a handheld vacuum pump.
4. Can a dirty or faulty mass airflow sensor (MAF) trigger OBDII code P2279 in an Acura?
- Yes, a dirty or malfunctioning MAF sensor can disrupt the air-fuel mixture and lead to a lean condition, potentially triggering the code.
5. Is it safe to continue driving my Acura with OBDII code P2279 indicating an intake air system leak?
- It is not recommended to drive your vehicle with this code as it can lead to engine performance issues and potential damage over time. It's best to address the issue promptly.
6. What are some repair tips for fixing OBDII code P2279 related to an intake air system leak in an Acura?
- Repair tips may include replacing the intake manifold gasket, repairing or replacing damaged intake ducts, checking and repairing vacuum lines, and ensuring all connections are secure.
7. Can a clogged air filter cause OBDII code P2279 to appear in an Acura?
- While a clogged air filter itself may not directly trigger the code, it can contribute to airflow restrictions and affect the overall performance of the intake air system.
8. How long does it typically take to repair OBDII code P2279 caused by an intake air system leak in an Acura?
- The repair time can vary depending on the exact cause of the leak and the complexity of the repair, but it may take anywhere from 1 to 4 hours in most cases.
9. Are there any preventative measures I can take to avoid OBDII code P2279 related to an intake air system leak in my Acura?
- Regularly inspecting and maintaining your intake system components, replacing air filters as recommended, and addressing any issues promptly can help prevent this code from appearing.
10. Can a faulty PCV (Positive Crankcase Ventilation) valve contribute to OBDII code P2279 being triggered in an Acura?
- Yes, a malfunctioning PCV valve can cause a vacuum leak in the intake system, leading to a lean condition and potentially triggering the code.
Discuss the causes and fixes for P2279 Acura OBDII Code
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Acura MDX 2006 Touring
Currently receiving P2279 code, I did clean throttle but replaced with thermal gasket can that be the cause?
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No, you probably have to set the idle, there is a factory service bulletin for that. We have updated the page information, please see "Tech Notes" above.
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Are you referring to the "idle relearn procedure"? I was instructed to remove the negative post for 20 minutes or so until computer resets, once completed to connect battery and start vehicle with no load and run rpm @ 3,000 until fan cycles twice or 5 minutes than once that is done to leave vehicle on for another 5 minutes. I did follow but didn't seem to do anything.
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Yes, but what you did is correct.
I checked a national database of repairs, and besides the idle learning procedure, the most common part is the PCV valve -
First, I would like to say that I sincerely appreciate the time you are taking trying to help out and I am grateful for that. Regarding the vehicle, I believe that I should have provided more information. Acura MDX 2006 Touring with approximate 129k. Timing belt and water pump replaced around 91K. In the past 2 months did some maintence which the engine light was already on with the same code. During the time I did some work such as some basic items such as rear diff fluid change, partial trans fluid change, idler pulley replaced with the drive belt, Spark plug , Coils (all) EGR and PCV valve. I did read something about the PCV which I had already changed it but I checked if all was properly hooked up. The odd part of this is approximately a month later no more than a month the PCV seemed clogged already. I was not able to hear the rattle at all. After cleaning it I was able to hear the rattle but dont understand why it was clogged.
I am very lost with this , Truly I dont know what to do and what is frustrating after speaking so much money and the codes being on, From experience with all the items listed already being taken care of how much do you think the cost is or the average cost for someone to look at this?
What I was wanting to know can another defective part trigger this code? I am not really understanding what to look for on the OBD2 besides the bottom line code. I dont know if there is s away to narrow the issues by looking at the readings? I am willing to donate , which in advance for someone to review the readings I I receive through the OBD2. Sorry for this long message, I am . -
The cost to diagnosis a problem like this one varies a lot, I would say between 2-4 hours of labor, labor rate are around $125. Just looking at the OBDII scanner readings may not be enough to to diagnose the problem from here. I have attached the diagnosis procedure recommended by the factory, I hope that helps. (click image to enlarge)
Click here to enlarge image
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