Failed emissions / Check engine light
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 830
Likes: 198
From: Murfreesboro Tennessee
Failed emissions / Check engine light
I failed emissions because the check engine light failed to come on...Anyone else ever had a problem with this ?If is a matter of replacing the bulb ? any help would be appreciated.
Safety Car
Joined: Aug 2000
Posts: 4,933
Likes: 30
From: San Rafael CA
Dump the codes ......
You need to dump the DTC data to the DIC to see why you failed. A burned out bulb isn't part of the test so if we can fix the underlying problem, you will pass.
To dump the codes, if you don't know how to do it ....
https://www.corvetteforum.com/techti...D=26&TopicID=1
Post the ENTIRE code (such as P1234C) ... Easiest to write them down once the display goes to MANUAL mode.
Post them here and we can figure out how to get you "smog legal" .... What state are you in ????
To dump the codes, if you don't know how to do it ....
https://www.corvetteforum.com/techti...D=26&TopicID=1
Post the ENTIRE code (such as P1234C) ... Easiest to write them down once the display goes to MANUAL mode.
Post them here and we can figure out how to get you "smog legal" .... What state are you in ????
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 830
Likes: 198
From: Murfreesboro Tennessee
check engine light not coming on when key turned on.
I live in Tennessee...and we have strict rediculous emissions here. I have an 02 Z06 with the following mods only..Lg long tube headers, x-pipe with cats, Blackwing Slp cold air intake.
I was throwing only 1 code...the ( PCM-10 ) i think this is has something to do with the mass air flow sensors..I cleared the code, but still no check eng light on when you turn the key on..which leads me to my next question....Is it just a simple thing as replacing the bulb on the rear of the guage cluster .....because someone said its impossible to get the bulbs for it..
Thanks
Race Director
Joined: Oct 2002
Posts: 16,477
Likes: 26
From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
This detail of the test seems to have come about in the past couple years, at least here.
With OBDII, they never even made you get out of the car, nor shut the engine off for testing, they just connected the cable, scanned, and if all was well, you passed.
Now, they do make you get out, they do shut the car off, and they do turn the ignition on to check for CE light operation prior to restarting . If it doesn't illuminate, you fail.
They probably think people are defeating the dash light in an effort to pass, but we both know unplugging a bulb won't really change anything in the course of the readiness tests, so I don't know why they now do that..
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 830
Likes: 198
From: Murfreesboro Tennessee
Emissions test
Thanks for the reply ..
Thats Exactly right.....They make you get out of the car pay them their 10 dollar fee..then they remove the gas cap, hook something up to it..and then they sit in the car..plug in a computer of some sort then turn the key on....where as they use to stick something up the tail pipe..and look for leaks under the car with a long mirror...man thing have changed...It looks like I may end up having to remove the entire dash / guage cluster to get to the bulb..Im not looking forward to that...but I did find a step by step link to do this at:www.spdkilz.com
Thats Exactly right.....They make you get out of the car pay them their 10 dollar fee..then they remove the gas cap, hook something up to it..and then they sit in the car..plug in a computer of some sort then turn the key on....where as they use to stick something up the tail pipe..and look for leaks under the car with a long mirror...man thing have changed...It looks like I may end up having to remove the entire dash / guage cluster to get to the bulb..Im not looking forward to that...but I did find a step by step link to do this at:www.spdkilz.com
Last edited by Flex182; Mar 16, 2008 at 09:54 AM. Reason: mispelled link
