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PCM Emissions?

This is a discussion on PCM Emissions? within the General Help forums, part of the LSx Technical Help Section category; My car will not pass emissions because the PCM is saying that it is not ready because of the rear ...

  1. #1
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    PCM Emissions?

    My car will not pass emissions because the PCM is saying that it is not ready because of the rear O2 simulators (car has LTs). Would having the rear O2s deleted fix this issue or would I still have the same problem?

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    The Bandit Wesman's Avatar
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    Quote Originally Posted by jeffs98ls1 View Post
    My car will not pass emissions because the PCM is saying that it is not ready because of the rear O2 simulators (car has LTs). Would having the rear O2s deleted fix this issue or would I still have the same problem?
    Yes, having the rear O2's deleted should fix the problem.

    It should come up "no errors reported" once they are deleted, instead of "Not ready".
    Last edited by Wesman; 04-29-2008 at 02:33 PM.

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    Quote Originally Posted by jeffs98ls1 View Post
    My car will not pass emissions because the PCM is saying that it is not ready because of the rear O2 simulators (car has LTs). Would having the rear O2s deleted fix this issue or would I still have the same problem?
    your SES light is on??? i'm not sure how emmission work in other states... but in PA if that light isn't on you pass...

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    no my light is not on. The PCM is saying that the rear 02s are not ready.

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    I have rear O2 simulators in to keep the SES light off.

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    Quote Originally Posted by jeffs98ls1 View Post
    no my light is not on. The PCM is saying that the rear 02s are not ready.
    so.... why are they scanning for shit?

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    Senior Member bigrondownhiller's Avatar
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    How long has it been since you put the simulators in? At certain intervals the pcm checks sensors and readings to make sure they are within cerain perameters. If the pcm hasn't cycled yet thats why it is saying that. You might have to drive the car a little more.

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    yes the car has been sitting. I drove it about 50 miles before having the emissions done. How long do I need to drive it for?

    Here are the inspection results

    MIL command status: Pass
    Diagnostic connector: Pass
    OBD communications: Pass
    Readiness result: Fail (is this from not drinving enough?)
    MIL KOER: Pass
    O2: completed
    O2 heater: not completed
    catalytic converter: not completed
    MIL KOEO: Pass
    EGR system: not completed
    Evap. system: not completed
    Secondary Air: completed

    The simulators have been in for a few years now.

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    Senior Member bigrondownhiller's Avatar
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    Was it ever a problem before?

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    No they just recently started doing these new emissions.

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    Quote Originally Posted by jeffs98ls1 View Post
    No they just recently started doing these new emissions.
    dude... find a conector that fits in to the plug (drivers side under the dash)...plug it up and tell them they "can't remove it... that is it part off a special tracking device and it will trigger a theft and thhat they owuld have to pay a $200.00 fine for when the cops come out..." they can't do shit then... taht is fucking retarded...

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    The Bandit Wesman's Avatar
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    Quote Originally Posted by jeffs98ls1 View Post
    yes the car has been sitting. I drove it about 50 miles before having the emissions done. How long do I need to drive it for?

    Here are the inspection results

    MIL command status: Pass
    Diagnostic connector: Pass
    OBD communications: Pass
    Readiness result: Fail (is this from not drinving enough?)
    MIL KOER: Pass
    O2: completed
    O2 heater: not completed
    catalytic converter: not completed
    MIL KOEO: Pass
    EGR system: not completed
    Evap. system: not completed
    Secondary Air: completed

    The simulators have been in for a few years now.

    Must have something to do with the way the simulators communicate with the ECU. They must just keep it in a "Not Ready" state indefinitely to keep the MIL from being set.

    Did you disconnect the battery recently?

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    No but the car does sit alot.

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