check engine light after K&N filter install? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Mr.R · 06-14-2012, 07:54 AM

I installed the filter at 1,200miles and at 1,400 miles the check engine light came on. I did not abuse the car (yet)

. I called Onstar and was told that it's the oxigen sensor on the right side exhaust signaling emission problems. I think there's a high chance they're related, as the events are too close... I also bought gas from Shell for the first time and I'm at half a tank...who knows.
Did you experience this and what was the fix, other than throwing out the KN filter? Will resetting/recalibrating the cumputer at the dealer work?
Thanks

*The Stig* · 06-14-2012, 08:00 AM

If its an O2 sensor that is acting up I can't imagine it was caused by the K&N filter. Have your tried reinstalling the OEM filter to see if that clears the code?

16floz470ml · 06-14-2012, 09:06 PM

You need to look at your fuel trims and o2 sensor readings on a scanner. If the filter throws the fuel trims off really far it could throw an o2 sensor code. On stock car long term trim should be around -1 on both banks. If you are + the car is seeing a lean condition and adding fuel. The front o2 sensor readings should switch like crazy and the rears should stay right around 500mv.

Mr.R · 06-14-2012, 09:52 PM

Thanks! They mentioned it was the front right O2 sensor.
Great news! It went away by itself. I Pushed it a bit today and who knows what happened. It was on in the morning and off in the afternoon. So I'm happy, plus I hit 1,500 miles!!! I can tell it runs better, smoother. I can also sense a bit more power, especially when I open up the exhaust all the time. It unbelievable what a difference an open exhaust and an air filter can do...
thanks again

AMCBimmer · 06-17-2012, 05:18 PM

Even though the light went out the fault is still there. I work for a dealership and our manufacturer light comes and goes.

Mr.R · 06-17-2012, 05:38 PM

Quote:

Originally Posted by AMCBimmer

Even though the light went out the fault is still there. I work for a dealership and our manufacturer light comes and goes.

so are you saying there's still a problem then? I'm scheduled for an oil change next week adn I can ask them to check the code...
thanks

RoketRdr · 06-17-2012, 05:47 PM

Quote:

Originally Posted by Mr.R

so are you saying there's still a problem then? I'm scheduled for an oil change next week adn I can ask them to check the code...
thanks

Your ECM will set 'hard' and 'soft' codes. A hard code remains logged even if the CEL goes out. Anything to do with emissions will set a hard code. You should definitely have them check it and see if any other codes were set.

Mr.R · 06-17-2012, 05:51 PM

Thanks!!

gmgdave · 06-17-2012, 11:18 PM

I have not had any lights. i also have a Code Reader to check for codes and I have no codes and I also have a program on computer to monitor the engine and no codes or issues with my program also.

AMCBimmer · 06-22-2012, 06:06 PM

Interesting! Keep us updated!

Mr.R · 06-24-2012, 09:46 PM

The check engine went out after 100 miles. I guess the computer adapted to it. Dealer checked the code Friday and said not to worry. You might get that with bad gasoline too. All I can say is that the throttle response is a bit quicker, someone said it gained 5hp on the dyno and I can hear the supercharger whine a bit more. It's worth it!

I will however get a CAI that doesn't need a tune. The engine bay looks so much better and I'll probably get 20HP more and a lot better exhaust/intake sound. I love that music so much I drive with my windows down and radio off.

06-14-2012, 07:54 AM	#1
Mr.R Drives: ZL1, Genesis, Grand Cherokee Join Date: Feb 2012 Location: Cleveland Posts: 233	check engine light after K&N filter install? I installed the filter at 1,200miles and at 1,400 miles the check engine light came on. I did not abuse the car (yet). I called Onstar and was told that it's the oxigen sensor on the right side exhaust signaling emission problems. I think there's a high chance they're related, as the events are too close... I also bought gas from Shell for the first time and I'm at half a tank...who knows. Did you experience this and what was the fix, other than throwing out the KN filter? Will resetting/recalibrating the cumputer at the dealer work? Thanks

06-14-2012, 08:00 AM	#2
The Stig I used to be Stieger.... Drives: a PBM camaro Join Date: Aug 2009 Location: Northern VA Posts: 25,730 View My Garage	If its an O2 sensor that is acting up I can't imagine it was caused by the K&N filter. Have your tried reinstalling the OEM filter to see if that clears the code? __________________ thanks for the sig Russ

06-17-2012, 05:18 PM	#5
AMCBimmer Drives: 2002 BMW M5 Join Date: Jun 2011 Location: Aldie, VA Posts: 203	Even though the light went out the fault is still there. I work for a dealership and our manufacturer light comes and goes. __________________

06-17-2012, 11:18 PM	#9
gmgdave Drives: 12 ZL1 & 08 Suzuki Boulevard C50 Join Date: Oct 2011 Location: Olympia, WA Posts: 347	I have not had any lights. i also have a Code Reader to check for codes and I have no codes and I also have a program on computer to monitor the engine and no codes or issues with my program also. __________________ 2012 ZL1 - #413 - IOM - Mods; Exhaust Commander. GMG Third Brake Light Pulsar, Tinted Windows, color matched Engine cover, ZL1 Floor Mats

06-22-2012, 06:06 PM	#10
AMCBimmer Drives: 2002 BMW M5 Join Date: Jun 2011 Location: Aldie, VA Posts: 203	Interesting! Keep us updated! __________________

06-14-2012, 09:06 PM	#3
16floz470ml Drives: 2012 ZL1 GLJ MG9 WBP RTQ Join Date: Nov 2011 Location: Texas Posts: 69	You need to look at your fuel trims and o2 sensor readings on a scanner. If the filter throws the fuel trims off really far it could throw an o2 sensor code. On stock car long term trim should be around -1 on both banks. If you are + the car is seeing a lean condition and adding fuel. The front o2 sensor readings should switch like crazy and the rears should stay right around 500mv.

06-14-2012, 09:52 PM	#4
Mr.R Drives: ZL1, Genesis, Grand Cherokee Join Date: Feb 2012 Location: Cleveland Posts: 233	Thanks! They mentioned it was the front right O2 sensor. Great news! It went away by itself. I Pushed it a bit today and who knows what happened. It was on in the morning and off in the afternoon. So I'm happy, plus I hit 1,500 miles!!! I can tell it runs better, smoother. I can also sense a bit more power, especially when I open up the exhaust all the time. It unbelievable what a difference an open exhaust and an air filter can do... thanks again

06-17-2012, 05:51 PM	#8
Mr.R Drives: ZL1, Genesis, Grand Cherokee Join Date: Feb 2012 Location: Cleveland Posts: 233	Thanks!!

06-24-2012, 09:46 PM	#11
Mr.R Drives: ZL1, Genesis, Grand Cherokee Join Date: Feb 2012 Location: Cleveland Posts: 233	The check engine went out after 100 miles. I guess the computer adapted to it. Dealer checked the code Friday and said not to worry. You might get that with bad gasoline too. All I can say is that the throttle response is a bit quicker, someone said it gained 5hp on the dyno and I can hear the supercharger whine a bit more. It's worth it! I will however get a CAI that doesn't need a tune. The engine bay looks so much better and I'll probably get 20HP more and a lot better exhaust/intake sound. I love that music so much I drive with my windows down and radio off.