Maf sensor damage
Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,150
From: SW Florida
2021 C6 of the Year Finalist - Modified
Just looking at the photo, that MAF sensor don't look bad at all. .How many miles on your C6?
1. Weak (high mileage) front pre-cat O2 sensors can certainly cause an overly lean or rich AFR resulting in a code.
2. Of course, the electronics in a failed MAF sensor can also cause a lean or rich AFR mixture with a resulting code.
1. Weak (high mileage) front pre-cat O2 sensors can certainly cause an overly lean or rich AFR resulting in a code.
2. Of course, the electronics in a failed MAF sensor can also cause a lean or rich AFR mixture with a resulting code.
Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,150
From: SW Florida
2021 C6 of the Year Finalist - Modified
Thread Starter
Burning Brakes
Joined: Aug 2018
Posts: 1,097
Likes: 398
From: ARKANSAS
I drive it every day. The o2 sensors are not original, I had LG long tubes installed a few years ago. Rear sensors were tuned out. I guess it's an easy fix to do front sensors.
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Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,150
From: SW Florida
2021 C6 of the Year Finalist - Modified
The screen is there to smooth out the airflow going over the MAF's hot-wire. This improves the accuracy of the MAF sensor.
You can do what you want, but I would not remove the screen.
You can do what you want, but I would not remove the screen.
Thread Starter
Burning Brakes
Joined: Aug 2018
Posts: 1,097
Likes: 398
From: ARKANSAS
c121 is the code. But I seem to have found the issue. When replacing the MAF after cleaning I found that the hose clamp attaching to the Throttle body was loose. I believed this caused the issues, Car runs 100% better now. I'll reset codes later and see if it comes back. But the backfires and pinging are gone.
Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,150
From: SW Florida
2021 C6 of the Year Finalist - Modified
