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Thread: COS5 egr "not supported"

  1. #1
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    Default COS5 egr "not supported"

    I have a 98 f-body swapped to a 99 pcm running the COS5 OS. I'm concerned that the egr system shows "not supported" in the emissions System Readiness Test. When that parameter doesn't match my '98 VIN build that will fail an OBDII test correct? Any help?!

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    I believe I am allowed one "not ready" before failing. Would a "not supported" fall into the same category maybe?

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    I think this post answered my question
    https://forum.efilive.com/showthread...-25-2013/page3
    '98 Z28 S475

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    Quote Originally Posted by B18B1LS1 View Post
    I believe I am allowed one "not ready" before failing. Would a "not supported" fall into the same category maybe?
    No, in CA they now require NONE not-ready.

    The not-supported will raise an alarm on the CARB central computer (so to speak) in Sacramento because the car came with EGR supported.


    Look at the EGR DTC's in C6001 and set them to either A or B.

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    Quote Originally Posted by B18B1LS1 View Post
    I think this post answered my question
    https://forum.efilive.com/showthread...-25-2013/page3
    It did (I'm getting old)...? Which post...?

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    I'll have a look at c6001 this evening. If it helps I'm in Georgia where the tests aren't quite as bad as California I hope.
    '98 Z28 S475

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    There is a good chance I misinterpreted what you guys were talking about in the post I linked. I thought you were basically saying a "not supported" would read "ready" at the emissions test.
    '98 Z28 S475

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    I guess I also should have mentioned I don't have an EGR system anymore.
    Last edited by B18B1LS1; December 5th, 2016 at 01:20 PM.
    '98 Z28 S475

  9. #9
    Joe (Moderator) joecar's Avatar
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    Yes, a not-supported shows up as ready.

  10. #10
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    Quote Originally Posted by B18B1LS1 View Post
    ... I'm in Georgia...
    Quote Originally Posted by B18B1LS1 View Post
    I guess I also should have mentioned I don't have an EGR system anymore.
    Ah, ok, in your case set all the EGR DTC's in C6001 to Not-Reported, and set all the same DTC's in C6002 to MIL (as in MIL enabled).

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