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OBDII Codes

This is a discussion on OBDII Codes within the General Help forums, part of the LSx Technical Help Section category; I have a 2000 T/A with K&N filter and descreened MAF . I've been running Superchips performance tune for a ...

  1. #1
    Old Rocker
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    2000 Trans Am

    Cool OBDII Codes

    I have a 2000 T/A with K&N filter and descreened MAF . I've been running Superchips performance tune for a couple of months now. This morning I got an SES light. I scanned for codes and found two of them, PO172 and PO175: "Running rich on right and left banks".
    Any ideas on where to start checking?

  2. #2
    Life in the Fast lane sunsetorangess's Avatar
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    Met. Sunset Orange
    01 SS

    What mods? I would clean the maf and ditch the k&n. I'v heard alot of issues with per. chips here lately.
    Is it a custom tune?
    J
    2001 SS, Its not the car its the Driver that matters....

  3. #3
    Senior Member
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    Might be the MAF descreening - maybe their tune assumes it's stock? Then maybe not since it's been a couple months? Something easy would be to return the PCM to stock tuning and see if it comes back if you're running the canned tune.

  4. #4
    Old Rocker
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    Not a custom tune. Just Superchip's tune. I set the shift points and firmness.
    I will clean the MAF and see if that helps. I normally clean the MAF a few days after cleaning and re-oiling the K&N. But I didn't do it the last time which was a few weeks ago. I hadn't thought of that. Most likely that is the cause.
    Thanks for the help.


  5. #5
    Life in the Fast lane sunsetorangess's Avatar
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    Met. Sunset Orange
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    Yepp Yepp let us know if it fixes your issue
    J

  6. #6
    Old Rocker
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    Looks like cleaning the MAF took care of it. No SES light so far.
    Thanks again for the help.

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