Smog fail
Thread Starter
Drifting
Joined: Jun 2000
Posts: 1,754
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From: Redwood City Ca
Smog fail
My C5 just failed smog because the battery had been disconnected for the past couple days, and according to the smog shop, the computer didn't have a chance to relearn yet. How many miles do I need on the car before the computer relearns enough to pass smog?
Race Director
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From: Haymarket VA
Le Mans Master
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Le Mans Master
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From: Rockledge FL
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President - COB
Joined: Oct 2013
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From: Bakersfield California
I just had this happen as well. I drove the car 100 miles to reset everything and according to the tech he said that one of the computers was still not registering but was acceptable by the State of California. I was surprised as well to learn that this was the case by disconnecting the battery. Apparently this is the case on cars from 1996 to current.
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Tech Contributor
Joined: Dec 1999
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Anytime you disconnect the battery OR reset ANY of the PCM related DTCs, the PCM Emission Ready Flags go to NOT ready.
Yep,, it takes drive time and drive cycles. Drive it to work and back several times. It will warm up and cool down and thats what makes the drive cycle happen. To get the fuel system flags ready, make sure that you have more than 3/4 tank (BUT NOT FULL)
Most states allow one NOT READY Flag to pass.
If you don't want to go to the emissions to check the readiness, swing by Autozone and they can use their scanner to check the readiness codes/flags
Bill
Yep,, it takes drive time and drive cycles. Drive it to work and back several times. It will warm up and cool down and thats what makes the drive cycle happen. To get the fuel system flags ready, make sure that you have more than 3/4 tank (BUT NOT FULL)
Most states allow one NOT READY Flag to pass.
If you don't want to go to the emissions to check the readiness, swing by Autozone and they can use their scanner to check the readiness codes/flags
Bill
Drifting
Joined: Sep 2009
Posts: 1,719
Likes: 4
From: cinnaminson n.j.
St. Jude Donor '14
Anytime you disconnect the battery OR reset ANY of the PCM related DTCs, the PCM Emission Ready Flags go to NOT ready.
Yep,, it takes drive time and drive cycles. Drive it to work and back several times. It will warm up and cool down and thats what makes the drive cycle happen. To get the fuel system flags ready, make sure that you have more than 3/4 tank (BUT NOT FULL)
Most states allow one NOT READY Flag to pass.
If you don't want to go to the emissions to check the readiness, swing by Autozone and they can use their scanner to check the readiness codes/flags
Bill
Yep,, it takes drive time and drive cycles. Drive it to work and back several times. It will warm up and cool down and thats what makes the drive cycle happen. To get the fuel system flags ready, make sure that you have more than 3/4 tank (BUT NOT FULL)
Most states allow one NOT READY Flag to pass.
If you don't want to go to the emissions to check the readiness, swing by Autozone and they can use their scanner to check the readiness codes/flags
Bill
Melting Slicks
Joined: Jul 2012
Posts: 2,507
Likes: 9
Be sure to let the tank get below 1/2 so the evap test can run.
