CEL triggered after Corsa axle back install
Thread Starter
Instructor
Joined: Jul 2017
Posts: 127
Likes: 32
From: Shelby Twp Michigan
CEL triggered after Corsa axle back install
2015 c7, highly modified, 800 rwhp. Last month I had the Corsa axle back installed and it triggered aCEL. The code P26c8.
I took it to my tuner he did what he thought would fix it but it did not. Onstar sends me a diagnostic summary each month and
they do not see an issue. Called Corsa they were not much help. Car runs fine. Hate to have to take it to a dealer. Looking for
any help I can get. Thanks.
I took it to my tuner he did what he thought would fix it but it did not. Onstar sends me a diagnostic summary each month and
they do not see an issue. Called Corsa they were not much help. Car runs fine. Hate to have to take it to a dealer. Looking for
any help I can get. Thanks.
Pro
Joined: Mar 2018
Posts: 677
Likes: 414
From: Pensacola, FL
I believe I read a post on here once stating that when you remove the AFM valves, there is a module that you connect into the wire harness to fool the computer into thinking the valves are still there...resulting in no CEL. I'll keep looking for it and see if I can find it again. Good Luck!
Racer
Joined: Sep 2019
Posts: 375
Likes: 208
From: Hershey,PA
I believe I read a post on here once stating that when you remove the AFM valves, there is a module that you connect into the wire harness to fool the computer into thinking the valves are still there...resulting in no CEL. I'll keep looking for it and see if I can find it again. Good Luck!
https://www.shopmrt.com/GM-AFM-NPP-P...0-p/91x010.htm
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Pro
Joined: Mar 2018
Posts: 677
Likes: 414
From: Pensacola, FL
I found this. I don't know if it's what you are talking about.
https://www.shopmrt.com/GM-AFM-NPP-P...0-p/91x010.htm
https://www.shopmrt.com/GM-AFM-NPP-P...0-p/91x010.htm
Racer
Joined: Sep 2019
Posts: 375
Likes: 208
From: Hershey,PA
I'm still looking, but no, thats not what I was referring to...what I remember was a module that plugs into the wire harness where the AFM valve plugs in. The member said it fools the computer into thinking the valves are plugged in therefore no CEL. It's been a couple years since I read it.
Pro
Joined: Mar 2018
Posts: 677
Likes: 414
From: Pensacola, FL
Nope, I'm pretty sure it was not the Range device, I have one of those in my Stingray. I gave up looking for the thread, I tried every key word I could think of. From what I remember, it was a small module that plugged into the harness, not the OBDII port under the dash. And he zip tied the connection out of the way. Sorry that I cant locate the thread.
Moderator emeritus
Joined: Jun 2001
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Nope, I'm pretty sure it was not the Range device, I have one of those in my Stingray. I gave up looking for the thread, I tried every key word I could think of. From what I remember, it was a small module that plugged into the harness, not the OBDII port under the dash. And he zip tied the connection out of the way. Sorry that I cant locate the thread.
Elmer
Racer
Joined: May 2013
Posts: 280
Likes: 262
From: Cabot, AR
Le Mans Master
Joined: Mar 2006
Posts: 7,207
Likes: 312
From: Lino Lakes MN
I believe this is what your looking for
https://www.corvetteforum.com/forums...te-module.html
ran across this earlier in the week when trying to determine what to do with my afm valves. For $30 I may try MRT product before shelling out $350 for a tune
https://www.corvetteforum.com/forums...te-module.html
ran across this earlier in the week when trying to determine what to do with my afm valves. For $30 I may try MRT product before shelling out $350 for a tune
Le Mans Master
Joined: Nov 2003
Posts: 8,004
Likes: 250
From: Tampa Fl
St. Jude Donor '12-'13-'14
This is what you have to do. Your tuner will have to license the valve to turn off.