MAF sensor code
Thread Starter
Race Director
Joined: Sep 2009
Posts: 11,351
Likes: 2,445
From: Eastern
MAF sensor code
Guys,
Last summer, I started to get the occasional Left Bank rich code by using my VCX Nano scanner. I would rest, but it would occasionally come back in.
I checked the coils, the spark plugs, removed the MAF sensor to check that out as well. All looked good. my 2006 has 125K miles on it so I replaced the spark plugs and wires, and this seemed to fix the running rich bank codes. I just recently took my car from winter hibernation, and on my first long run, I recived the MAF sensor code.
I run a Vararam Snake Charmer CAI, have had it on since 2010 or so without any issues. When I claned the filter on the CAI, I sprayed WD-40 on the back side of the filter, which I had done many times prior.
Since I didnt clean the MAF last summer, I bought a can of MAF cleaner and sprayed it good, let it dry then reinstalled. So far, no more MAF sensor codes, so I'm crossing my fingers that it was the cause of the code.
Did anyone else with a Vararam have the same issue with a dirty MAF?
Last summer, I started to get the occasional Left Bank rich code by using my VCX Nano scanner. I would rest, but it would occasionally come back in.
I checked the coils, the spark plugs, removed the MAF sensor to check that out as well. All looked good. my 2006 has 125K miles on it so I replaced the spark plugs and wires, and this seemed to fix the running rich bank codes. I just recently took my car from winter hibernation, and on my first long run, I recived the MAF sensor code.
I run a Vararam Snake Charmer CAI, have had it on since 2010 or so without any issues. When I claned the filter on the CAI, I sprayed WD-40 on the back side of the filter, which I had done many times prior.
Since I didnt clean the MAF last summer, I bought a can of MAF cleaner and sprayed it good, let it dry then reinstalled. So far, no more MAF sensor codes, so I'm crossing my fingers that it was the cause of the code.
Did anyone else with a Vararam have the same issue with a dirty MAF?
Last edited by 4SUMERZ; Apr 28, 2026 at 11:55 PM.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,621
Likes: 4,068
From: Cape Coral, Florida
WD40 ???...what product does the manufacturer say to reoil with ??...you most likely over oiled the filter and it coated the MAF sensor which will set a DTC...I always clean my MAF sensor after reoiling and running the engine.
Thread Starter
Race Director
Joined: Sep 2009
Posts: 11,351
Likes: 2,445
From: Eastern
Much appreciated.
No more codes for the MAF since I cleaned the sensor
Last edited by 4SUMERZ; May 3, 2026 at 07:04 PM.
