Check Engine Fault
 

Recently, I purchased a 2007 Passat 2.0 Turbo. After driving the car for about a week, the check engine light came on. I had the code checked and it said the #4 cylinder was misfiring. I changed the spark plugs and the #4 ignition coil. I then had the code cleared. Now, the light is back on.
I don't know what else to check or change. Any ideas on what could be causing this error?


Thanks

Welcome to the forum. Attachment 2551

You need to get your motor scanned (preferably with VAG-COM\VCDS) for any error codes logged in the ecu and post them, that will save a lot of guessing.

https://volkswagenforum.com/forum/ne...gnature-34185/

Solved
 

Figured this one out. It is my gascap seal. The seal is apparently gone and causes a "check engine" error. Has to be replaced.
Expensive damned thing too.

My check engine light has become a regular fixture on my console; 2006 2.0L Passat. I was told initially that is was due to an oil leak. That was fixed, light came back. Now 3 different shops are telling me it's a temp sensor issue. They said if the car's temp is staying regular to not worry about it.