how do I remove check engine light
Thread Starter
Racer
Joined: Aug 2007
Posts: 497
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From: Monrovia California
how do I remove check engine light
how do I remove check engine light Need to smog tomorrow and light just came on tonight wile holding car in 2nd geat going up hill. Also I can not check the codes is this procedure correct press and hold reset button and press the fuel button 4 times I tried 100 X's and I get no read of codes nothing nada.
Thanks for the help
Thanks for the help
Tech Contributor
Joined: Dec 2003
Posts: 19,384
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From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
The ingition needs to be on with the engine not started.
Some of the codes will be H (history but you'll have at least one code C (current). thats what's causing the check engine light.
Some of the codes will be H (history but you'll have at least one code C (current). thats what's causing the check engine light.
Last edited by DeeGee; Sep 12, 2007 at 04:14 PM.
Burning Brakes
Joined: May 2007
Posts: 1,078
Likes: 5
From: Denver, North Carolina
Press the reset button once to clear the DIC. Then press and hold the Option button while pressing the fuel button 4 times quickly. This link should help you.
http://www.corvettedoctor.com/2004_DTC_Codes.html
http://www.corvettedoctor.com/2004_DTC_Codes.html
Last edited by SebringSixSpeed; Sep 12, 2007 at 02:07 AM.
Tech Contributor
Joined: Dec 2006
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From: Van Buren Arkansas
Wounded Warrior Escort '11
What the others said will possibly clear the code and light, however, I remember someone on the forum said there was some other code for the system to report not ready till something like 50 start cycles or whatever. I simply don't remember now, but let us know if it passes or not.
Race Director
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how do I remove check engine light Need to smog tomorrow and light just came on tonight wile holding car in 2nd geat going up hill. Also I can not check the codes is this procedure correct press and hold reset button and press the fuel button 4 times I tried 100 X's and I get no read of codes nothing nada.
Thanks for the help
Thanks for the help
Race Director
Joined: Jul 2004
Posts: 16,795
Likes: 62
From: Lake Havasu City, AZ
When the reset button does not clear the CEL and resetting codes does not clear the CEL this is what I have done... a PCM re-learn
Insert key into ignition and turn to the "On" position but, DO NOT START THE ENGINE.
Pop open the engine fuse block box cover and remove the two 10amp fuses from position numbers 16 & 23.
Your DIC will now display "check" messages for ABS, etc...
Turn ignition to the "Off" position.
Re-insert both 10amp fuses for positions 16 & 23.
Start your engine
Allow engine coolant temperature to reach a minimum of 176 degrees F and run at this minimum temperature for at least 5 minutes.
Shut down engine
Let rest for a minimum of 30 seconds.
Restart engine - check for DIC error codes (there should be none).
Drive car for a minimum of 30 miles at varying rpm settings and speeds. PCM will now re-learn and adjust for the new air flow and air temperature at the intake.
Insert key into ignition and turn to the "On" position but, DO NOT START THE ENGINE.
Pop open the engine fuse block box cover and remove the two 10amp fuses from position numbers 16 & 23.
Your DIC will now display "check" messages for ABS, etc...
Turn ignition to the "Off" position.
Re-insert both 10amp fuses for positions 16 & 23.
Start your engine
Allow engine coolant temperature to reach a minimum of 176 degrees F and run at this minimum temperature for at least 5 minutes.
Shut down engine
Let rest for a minimum of 30 seconds.
Restart engine - check for DIC error codes (there should be none).
Drive car for a minimum of 30 miles at varying rpm settings and speeds. PCM will now re-learn and adjust for the new air flow and air temperature at the intake.
Melting Slicks
Joined: Oct 2006
Posts: 2,938
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From: hebron IL
C3 of Year Finalist (appearance mods) 2019
If you clear your codes they may not pass the smog test. They will hookup a scan tool to your car.If they don't show any history codes they may ask you to come back in a week or about 300 miles.
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Isn't the check engine light usually an indication of a problem with the smog equipment to begin with?
I'd be fairly surprised if you pass the test, with or without the light. But I wish you all the best, regardless.
I'd be fairly surprised if you pass the test, with or without the light. But I wish you all the best, regardless.
Race Director
Joined: Jun 2004
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From: Schaumburg IL
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but it also depends on the code. If it is related to smog, even if you clear it, when the inspection center scans your PCM it will show up, since you just threw a code the car will not be in "readiness" mode. I forget the exact amount of time and ignition cycles you need to get in readiness mode...but I'd be willing to bet that you will not pass emission since you just through this code.Good luck and I hope you do pass
Instructor
Joined: Oct 2007
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From: Orland Park IL
After clearing codes the vehicle must pass a complete drive cycle, if not when you go to take the test the with the system monitor not ready due to incomplete drive cycle they will not test it. Drive it for a couple days before going for the test.
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