Audi A4 Quattro 2010 Check Engine Light on, Need help
08-21-2018, 04:48 PM
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Audi A4 Quattro 2010 Check Engine Light on, Need help
my car just recently started giving me these codes P0301- Clyinder 1 Misfire, and cylinder 4 misfire.
P2279- Intake air system leak.
just wondering what could be cashing these codes and what I can do to fix it myself.
P2279- Intake air system leak.
just wondering what could be cashing these codes and what I can do to fix it myself.
08-21-2018, 06:28 PM
#2
AudiWorld Senior Member
It appears you may have 2 different issues here. The easiest check would be to switch coil #1 and coil #2. Clear the codes and then start the car. If you get a P0301 again then replace the spark plug. By the way how many miles are on the plugs. The recommendation is to change them every 35K miles. Do the same with cyl #4 an #3. The other part of the problem is the P2279 code as this could be a PCV valve vacuum leak . The confusing part is that a bad PCV can cause mis-fires. So I would do the coil swap first. The other problem is if you keep driving with this problem you can damage the cat. Now if you have more then 35K on the plugs just change them anyway and see what they look like.
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