[Z06] O2 codes after Installing Headers
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1st Gear
Joined: Nov 2005
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O2 codes after Installing Headers
I’m the original owner of a 2002 C5 Z06. I’ve installed a Vararam VR-2B ram air intake, Dynatech LT exhaust system (headers, high flow cats, x-pipe) and Borla Stinger cat-backs. I have NOT changed the factory program.
After driving several hundred miles I started to see front O2 sensor codes (P1033 & P1053). I’d clear them and they would continue to come back. There is also residue building up at the tips indicating that the car is now running rich (dark black, cakey build-up, UG!
). Because of the codes I’m not able to pass the Texas pollution inspection.
I’ve taken the car to the GM dealer who after two weeks which included replacing the front O2 sensors has been unable to resolve the reason for the O2 codes. The GM mechanic felt that I had a sever carbon build-up problem. After a lot of injector cleaner and 2, 4-hour highway runs I’m still throwing the same front O2 codes.
Any comments/help would be GREAT!!!
After driving several hundred miles I started to see front O2 sensor codes (P1033 & P1053). I’d clear them and they would continue to come back. There is also residue building up at the tips indicating that the car is now running rich (dark black, cakey build-up, UG!
). Because of the codes I’m not able to pass the Texas pollution inspection.I’ve taken the car to the GM dealer who after two weeks which included replacing the front O2 sensors has been unable to resolve the reason for the O2 codes. The GM mechanic felt that I had a sever carbon build-up problem. After a lot of injector cleaner and 2, 4-hour highway runs I’m still throwing the same front O2 codes.
Any comments/help would be GREAT!!!
Moderator
Joined: Jun 2004
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Most people get the rears (0430 and 0420) to throw a code after header installs, I did. You may have to go and get a tune done. The obvious thought would be that they are connected wrong but since you say the dealer I assume they double checked that; could be wrong though.
Something is probably installed wrong.
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I’m the original owner of a 2002 C5 Z06. I’ve installed a Vararam VR-2B ram air intake, Dynatech LT exhaust system (headers, high flow cats, x-pipe) and Borla Stinger cat-backs. I have NOT changed the factory program.
After driving several hundred miles I started to see front O2 sensor codes (P1033 & P1053). I’d clear them and they would continue to come back. There is also residue building up at the tips indicating that the car is now running rich (dark black, cakey build-up, UG! ). Because of the codes I’m not able to pass the Texas pollution inspection.
I’ve taken the car to the GM dealer who after two weeks which included replacing the front O2 sensors has been unable to resolve the reason for the O2 codes. The GM mechanic felt that I had a sever carbon build-up problem. After a lot of injector cleaner and 2, 4-hour highway runs I’m still throwing the same front O2 codes.
Any comments/help would be GREAT!!!
After driving several hundred miles I started to see front O2 sensor codes (P1033 & P1053). I’d clear them and they would continue to come back. There is also residue building up at the tips indicating that the car is now running rich (dark black, cakey build-up, UG!
). Because of the codes I’m not able to pass the Texas pollution inspection.I’ve taken the car to the GM dealer who after two weeks which included replacing the front O2 sensors has been unable to resolve the reason for the O2 codes. The GM mechanic felt that I had a sever carbon build-up problem. After a lot of injector cleaner and 2, 4-hour highway runs I’m still throwing the same front O2 codes.
Any comments/help would be GREAT!!!
Melting Slicks
Joined: Aug 2006
Posts: 3,123
Likes: 116
From: North Dallas Forty Orange County, Ca.
St. Jude Donor '08-'09-'10-'11-'12-'13, '15,'21
Had the same problem. After about a month now I've been clear.
I purchased the adapter plugs from LG and switched the rear O2's to the front. Don't know if it's because the rear sensors supposedly burn hotter and react faster (I've read this several places) or if they were new, but it's working.
You will need the tune, and I would suggest using some seafoam (search) to clean intake passages and the motor top end (change oil afterwards).
good luck.
I purchased the adapter plugs from LG and switched the rear O2's to the front. Don't know if it's because the rear sensors supposedly burn hotter and react faster (I've read this several places) or if they were new, but it's working.
You will need the tune, and I would suggest using some seafoam (search) to clean intake passages and the motor top end (change oil afterwards).
good luck.
