Volkswagen Passat Forum banner

1 - 2 of 2 Posts

·
Registered
Joined
·
1 Posts
Discussion Starter #1
Hello, about a month ago I had these codes and the mechanic diagnosed it as a bad PCV valve, had it replaced and ran fine for about a month aside from slight rough idling. Now as of yesterday, the codes returned but no difference from the vehicle aside from the rough idling which I suspect could be something. I had my MAF replaced this year along with vaccum lines replaced. I cleaned my MAF with MAF cleaner recently so I'm ruling that out. I'm bringing her into a mechanic tomorrow but wanted to see if anyone can lend me some advice as to what I should be looking for. Im reading to check my breather valve? is that the same as a PCV valve? I love my car but she is very needy as she just hit 141k, I want to keep her going past 150k but shes testing my patience and wallet. Any advice or ideas will help! Thank you - Justin
 

·
Registered
Joined
·
1,114 Posts
Putting these two codes together (high RPM and system too lean) would suggest a vacuum leak downstream of the MAF.
 
1 - 2 of 2 Posts
Top