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Failed Emissions. Computer Not Ready

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Old Jul 14, 2009 | 09:05 AM
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Unhappy Failed Emissions. Computer Not Ready

Yesterday I failed the Washington State emissions test because my computer was not ready. I do have headers and i'm not running any cats. So up until this weekend it was throwing a code because there were no rear o2 sensors. But on Saturday I had the car dyno tuned and the code was programmed out.

The sheet the emission testing place gave me said there could be up to 2 "not ready" codes and the car would still pass. It should only have one since he didn't touch anything else.

So it sounds like the computer hasn't run through a complete cycle yet. Is this normal? I have put about 150 miles on the car since my tune.

Could there be something wrong?
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Old Jul 14, 2009 | 10:20 AM
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There's two ways to "program out" a code, one is
"enabled, no error" (good) and one is "disabled".
Disabling can suppress the "higher level" readiness
monitors that depend on tests running to complete.

Some tests want very specific circumstances to run
and your everyday commute may, or may not, hit
the conditions. There is a "drive cycle" that's defined
to hit them but it can be pretty tedious to execute.
So be sure the code turn-off isn't going to make it
all for nothing.
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Old Jul 14, 2009 | 10:37 AM
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Would it matter if he set it to disable or no error? Because up to 2 codes can be "not ready" and it will still pass. Or are you saying that one code will effect others and not allow the car to complete a cycle?
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Old Jul 14, 2009 | 11:54 AM
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He's telling you that there is more than one way to just shut off your light, one of them will stop readiness from happening.
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Old Jul 14, 2009 | 11:59 AM
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You can pass inspection with out cats????
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Old Jul 14, 2009 | 12:23 PM
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Originally Posted by jester ls1
You can pass inspection with out cats????
Have you been living in a cave for the past 10 years?
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Old Jul 14, 2009 | 12:41 PM
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not a visual but inspectors are to lazy to look under your car so yes LOL!!
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Old Jul 14, 2009 | 12:48 PM
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Originally Posted by SKINNY69
Have you been living in a cave for the past 10 years?


OK so I guess I need to go back to the guy who dyno tuned my car and have him change the setting to "enabled - no error"? He said if I ever wanted any changes like that he would do them for free. Not bad for $220!
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Old Jul 14, 2009 | 07:50 PM
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So I took the car to the local auto parts store and they scanned it. It came up with 4 codes. All of which said that bank 1 & 2 sensor #2 no activity.

What exactly does this mean?

Edit: There is still no SES light.
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Old Jul 14, 2009 | 09:57 PM
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That means the codes were turned off the wrong way, as was suggested earlier in this thread.
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Old Jul 14, 2009 | 10:34 PM
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Originally Posted by gametech
That means the codes were turned off the wrong way, as was suggested earlier in this thread.
Thanks a lot guys! Once again you really helped me out and saved me a lot of money.
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Old Jul 14, 2009 | 11:17 PM
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Originally Posted by ryanater
Thanks a lot guys! Once again you really helped me out and saved me a lot of money.
That is the entire point of this forum.
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Old Jul 24, 2009 | 10:28 PM
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Ok so I took it back to the tuner and he wasn't exactly sure how to turn off the SES light without completely disabling the rear O2 sensors.

I was wondering what exactly needs to be changed from stock to pass emissions? He is using HP tuners. So what parameters should he change and what should he change them to?
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Old Jul 24, 2009 | 11:45 PM
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I would say he needs to just turn off the reported code so you don't get the light and leave the rear O2s active so that way it would show they are working.
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Old Jul 25, 2009 | 12:02 AM
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Have your tuner look at this screen capture I added as an attachment. Make sure he does the same thing to AIR and EGR if you deleted those as well.
Attached Thumbnails Failed Emissions. Computer Not Ready-emissions1.jpg  
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Old Aug 19, 2009 | 06:26 PM
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Originally Posted by Josh18Fan
Have your tuner look at this screen capture I added as an attachment. Make sure he does the same thing to AIR and EGR if you deleted those as well.
So I got it re-tuned and the same thing happened. I didn't pass because the car wasn't ready.

So I took it to the auto parts store and pugges it into a handheld scanner and I got the same codes.

p0140 and p0160.

What is the tuner doing wrong that it is making the computer throw these codes even though I don't have a Service Engine light on?
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Old Aug 19, 2009 | 08:16 PM
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Originally Posted by Josh18Fan
Have your tuner look at this screen capture I added as an attachment. Make sure he does the same thing to AIR and EGR if you deleted those as well.

NO this is wrong.

Last edited by Frost; Aug 19, 2009 at 10:01 PM.
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Old Aug 19, 2009 | 08:29 PM
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Originally Posted by Frost
NO this is wrong.
Well what should it be then?

And the guy is actually pretty good but he specializes in Mustangs.

Last edited by ryanater; Aug 19, 2009 at 10:05 PM.
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Old Aug 19, 2009 | 09:27 PM
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check your msgs
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