Got my after market headers removed but check engine is still on. - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

rainofcastamere · 06-27-2016, 12:14 PM

I got my aftermarket headers removed and my stock headers put back in but the check engine light is still on, I've driven it about 120 miles so far, is it supposed to just turn off on its own eventually?

edit* The aftermarket headers were stainless power and I have NPP exhaust right now. O2 sensors were swapped from long tubes to oem. The codes pulled from autozone were P0420 and P0430 repeated.

Update* CEL went away on its own after I drove it a little over 200 miles.

Trob85 · 06-27-2016, 12:38 PM

Ok first off let's start by telling the back story. What headers? Any catback? Did you remove any sensors? Did you have the car tuned? Did you pull the codes that tell you what was off?

rainofcastamere · 06-27-2016, 02:06 PM

Quote:

Originally Posted by Trob85

Ok first off let's start by telling the back story. What headers? Any catback? Did you remove any sensors? Did you have the car tuned? Did you pull the codes that tell you what was off?

The aftermarket headers were stainless power and I have NPP exhaust right now. O2 sensors were swapped from long tubes to oem. The codes pulled from autozone were P0420 and P0430 repeated.

Mr. Stacy · 06-27-2016, 02:08 PM

https://axleaddict.com/auto-repair/C...rs-For-Dummies

Might clear on it's own after a while. Could try a fuse pull or a battery disconnect and see if it comes back...

Homeless Man · 06-27-2016, 02:29 PM

You have to disconnect the battery...try disconnecting it overnight.

MrChrisLS3 · 06-27-2016, 02:44 PM

Quote:

Originally Posted by rainofcastamere

I got my aftermarket headers removed and my stock headers put back in but the check engine light is still on, I've driven it about 120 miles so far, is it supposed to just turn off on its own eventually?

edit* The aftermarket headers were stainless power and I have NPP exhaust right now. O2 sensors were swapped from long tubes to oem. The codes pulled from autozone were P0420 and P0430 repeated.

Clear the code with a code reader, or battery disconnect. Trouble with disconnect is you will lose any radio presets and all that kind of stuff, I think.

Or it will probably go away on it's own. The ECU will shut it off after x amount of successful system checks, not sure how many for emission faults on this car though.

wrtowman · 06-27-2016, 02:51 PM

parts store will also clear if you do not have a scanner.

maddoggyusa · 06-27-2016, 03:33 PM

did you ever read the code before you installed these headers??

normally after making repairs, you reset the light and see it if comes back. If yes, need to read the code.

the shop that installed the headers should have done this for you. if so, you need to read the code.

PalmerGA · 06-27-2016, 06:08 PM

Step one: Disconnect your battery for at least 3 hours. Reconnect and see if the CEL has gone away. If not... go to Step Two (though I don't know what that would be).

rainofcastamere · 06-27-2016, 06:45 PM

Quote:

Originally Posted by wrtowman

parts store will also clear if you do not have a scanner.

Really? Do they charge for that?

Tenring · 06-27-2016, 06:49 PM

Quote:

Originally Posted by rainofcastamere

Really? Do they charge for that?

Usually not.

rainofcastamere · 06-27-2016, 06:52 PM

Quote:

Originally Posted by Tenring

Usually not.

Quote:

Originally Posted by maddoggyusa

did you ever read the code before you installed these headers??

normally after making repairs, you reset the light and see it if comes back. If yes, need to read the code.

the shop that installed the headers should have done this for you. if so, you need to read the code.

From autozone:

P0420 - Catalyst System Low Efficiency

P0430 - Catalyst Efficiency Below Normal

P0420 - Catalyst System Low Efficiency

P0430 - Catalyst Efficiency Below Normal

hunter1660 · 06-27-2016, 07:48 PM

If you had no cel with headers the car was tuned and rear sensors turned off. When you reconnected the rears sensors the cel is present. Tune needs to be put back to stock.

PeteD · 06-27-2016, 07:48 PM

Quote:

Originally Posted by wrtowman

parts store will also clear if you do not have a scanner.

Not around here.......

06-27-2016, 12:14 PM	#1
rainofcastamere Drives: 2012 Bumblebee Join Date: Apr 2016 Location: Houston Posts: 40	Got my after market headers removed but check engine is still on. I got my aftermarket headers removed and my stock headers put back in but the check engine light is still on, I've driven it about 120 miles so far, is it supposed to just turn off on its own eventually? edit* The aftermarket headers were stainless power and I have NPP exhaust right now. O2 sensors were swapped from long tubes to oem. The codes pulled from autozone were P0420 and P0430 repeated. Update* CEL went away on its own after I drove it a little over 200 miles. Last edited by rainofcastamere; 07-13-2016 at 11:25 PM.

06-27-2016, 12:38 PM	#2
Trob85 Svt lol Drives: 2011 ss inferno orange blown Join Date: Jan 2012 Location: Topeka Posts: 2,312	Ok first off let's start by telling the back story. What headers? Any catback? Did you remove any sensors? Did you have the car tuned? Did you pull the codes that tell you what was off? __________________ plasti dip is not a mod.......and a cold air intake doesn't make you fast!

06-27-2016, 02:08 PM	#4
Mr. Stacy El Duderino Drives: 2011 2LTRS Convertible Join Date: Jan 2016 Location: Seattle Posts: 2,194 View My Garage	https://axleaddict.com/auto-repair/C...rs-For-Dummies Might clear on it's own after a while. Could try a fuse pull or a battery disconnect and see if it comes back... __________________ I bowl. Drive around. The occasional acid flashback.

06-27-2016, 02:29 PM	#5
Homeless Man Homeless Life Chose Me Drives: LS3 (sold 4/21) Join Date: Nov 2014 Location: Streets of Philly Posts: 3,648	You have to disconnect the battery...try disconnecting it overnight. __________________ Pity a man in familiar places, who yet feels like a stranger.

06-27-2016, 02:51 PM	#7
wrtowman Drives: 2011 Camaro 1SS Join Date: Feb 2016 Location: Warner Robins Ga Posts: 778	parts store will also clear if you do not have a scanner. __________________ 2011 SGM Camaro 1SS/RS A6 - Vengeance Racing built/tuned. 590RWHP/560RWTQ, ADM LSA Conversion, 2.5 Grip-Tec, ZL1 fuel pump, ADM FPCM, FIC1000, VRPD2 Cam and LS3 Conversion with all the internal goodies, American Racing 1 7/8 Headers, no cats, SW Retro Cat Back, ADM Intake, AFCO HX, Varimax Pump, Rotofab Reservoir, B&M Transmission Cooler, VMAX TB, Elite Engineering CC, BMR LCAs, Trailing Arms, Toe Rods, DSS 1000hp axles, ZL1 Bumper and Sideskirts, Night Owl Halos, Matte Black 20" Rohana RC-22 with 20x10-275s/20x11-315s, R1 Concept Premier Drilled/Slotted Rotors, Hawk Ceramic Pads.

06-27-2016, 03:33 PM	#8
maddoggyusa Drives: 2013 Camaro Dusk 2SS/6 Join Date: Sep 2013 Location: New Jersey Posts: 1,586	did you ever read the code before you installed these headers?? normally after making repairs, you reset the light and see it if comes back. If yes, need to read the code. the shop that installed the headers should have done this for you. if so, you need to read the code.

06-27-2016, 06:08 PM	#9
PalmerGA Drives: 2013 SIM 1SS/RS L99 Join Date: May 2012 Location: Southwest GA Posts: 8,754 View My Garage	Step one: Disconnect your battery for at least 3 hours. Reconnect and see if the CEL has gone away. If not... go to Step Two (though I don't know what that would be). __________________ 2013 1SS/RS Coupe L99, Stainless Power Works LT Headers, SCT X4 Custom Tune from RDP, CAI Inc. Air Intake w/ Apex Scoop, VMAX CNC Ported Throttle Body, Solo Axle-Back Exhaust w/ J-pipes, Apex Catch Can, Husky Splash Guards, Heritage Grille, 3D Carbon Rear Spoiler, Oracle Chrome Turn Signal Bulbs, GM Reverse Light Trim Billets, Gorilla Black Locking Lugs, Emblem Pros Retro SS Badges/Custom Retro SS Kickplates/Under-hood Bowtie, 35% window Tint, Nitto Motivo Tires (6-8-18)

06-27-2016, 07:48 PM	#13
hunter1660 Drives: 2011ss/rs camaro Join Date: Sep 2011 Location: florida Posts: 1,261	If you had no cel with headers the car was tuned and rear sensors turned off. When you reconnected the rears sensors the cel is present. Tune needs to be put back to stock. __________________ . OBX LTH,Rotofab,Magnuson Heartbeat.AEM wideband, HP Tuners