Cel p26c8/p12e8/p12ea
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CEL p26c8/p12e8/p12ea Code Help
Hello,
recently my CEL light came on and I’ve gotten the following codes P26C8/P12E8/P12EA. I have a 2019 base c7 stingray automatic with Z51 package and NPP exhaust. The only mods I’ve done on my car is add a solers performanc throttle controller which I added over a year ago and two months ago I had an exhaust shop add an awe touring edition axleback with the AFM valve simulators. I didn’t have any issues with the installed exhaust in the first month and a half or so but for the last week or two
weeks I started Getting a CEL and was wondering if it’s because of the exhaust install? About a week or two ago there was a bad storm and there were a lot of tree branches under my car so I dont know if it pulled on somethitn under the car but I did take a look under it and it did seem okay. One thing I noticed the exhaust shop did when installing was add a valve simulator to the NPP and leave the NPP attached. I’ve seen some videos of some people just leaving the NPP off and tie it off.
Some things I’ve tried:
- check under car to see if NPP or AFM wires were disconnected
- tried turning off the CEL light and it came back on after a few drives
- previously I had taken out the fuse for NPP so valves would always be open but put that back in and the CEL didn’t come off for a few drives then came back on
any other suggestions?? Also
this might be a silly question but would I be Able to take it to a dealer or would my car no longer be under warranty due to changing out my exhaust.
recently my CEL light came on and I’ve gotten the following codes P26C8/P12E8/P12EA. I have a 2019 base c7 stingray automatic with Z51 package and NPP exhaust. The only mods I’ve done on my car is add a solers performanc throttle controller which I added over a year ago and two months ago I had an exhaust shop add an awe touring edition axleback with the AFM valve simulators. I didn’t have any issues with the installed exhaust in the first month and a half or so but for the last week or two
weeks I started Getting a CEL and was wondering if it’s because of the exhaust install? About a week or two ago there was a bad storm and there were a lot of tree branches under my car so I dont know if it pulled on somethitn under the car but I did take a look under it and it did seem okay. One thing I noticed the exhaust shop did when installing was add a valve simulator to the NPP and leave the NPP attached. I’ve seen some videos of some people just leaving the NPP off and tie it off.
Some things I’ve tried:
- check under car to see if NPP or AFM wires were disconnected
- tried turning off the CEL light and it came back on after a few drives
- previously I had taken out the fuse for NPP so valves would always be open but put that back in and the CEL didn’t come off for a few drives then came back on
any other suggestions?? Also
this might be a silly question but would I be Able to take it to a dealer or would my car no longer be under warranty due to changing out my exhaust.
Last edited by acnburner194; Apr 21, 2022 at 10:36 AM. Reason: More specific
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From: Montoursville Pa
Take a look at this https://www.corvetteforum.com/forums...hp-tuners.html
loos like your simulators are bad. they can be tuned out cheapest way to do it would be to find someone near you who has HP tuners and can do it for you.
loos like your simulators are bad. they can be tuned out cheapest way to do it would be to find someone near you who has HP tuners and can do it for you.
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is there any reason there would be no CEL the first two months and then come on?
Take a look at this https://www.corvetteforum.com/forums...hp-tuners.html
loos like your simulators are bad. they can be tuned out cheapest way to do it would be to find someone near you who has HP tuners and can do it for you.
loos like your simulators are bad. they can be tuned out cheapest way to do it would be to find someone near you who has HP tuners and can do it for you.
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Joined: Aug 2018
Posts: 85
Likes: 6
Safety Car
Joined: Feb 2002
Posts: 3,726
Likes: 368
From: Montoursville Pa
as to a dealer they can't remove the AFM valve setup in the computer. it is something you need to do outside of that.
No a catback should not void the warrantee.
as to replacement simulators . I gave up and tuned them out. Things may have changed since then but I could not find any (two years ago)
No a catback should not void the warrantee.
as to replacement simulators . I gave up and tuned them out. Things may have changed since then but I could not find any (two years ago)
