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Thread: DTC 1122 & 0122 TPS on a 2000 LS1

  1. #1
    Tuner in Training
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    DTC 1122 & 0122 TPS on a 2000 LS1

    Have a friend that I was diagnosing an intermittent idle spike from about 900 to 1400.

    It's throwing a DTC 0122 & 1122, do y'all think the sensor is just toasted?
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    2001 TA ~ 2000 TA ~ 95 TA - Sold ~ 87 FB - Buried in New Mexico ~ 86 FB - Sold

  2. #2
    Tuner in Training
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    Re: DTC 1122 & 0122 TPS on a 2000 LS1

    bueler, bueler, bueler, anyone, anyone, anyone...
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    2001 TA ~ 2000 TA ~ 95 TA - Sold ~ 87 FB - Buried in New Mexico ~ 86 FB - Sold

  3. #3
    Tuner in Training
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    Re: DTC 1122 & 0122 TPS on a 2000 LS1

    I guess no one has ever had this problem.
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    2001 TA ~ 2000 TA ~ 95 TA - Sold ~ 87 FB - Buried in New Mexico ~ 86 FB - Sold

  4. #4
    Advanced Tuner
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    Re: DTC 1122 & 0122 TPS on a 2000 LS1

    They are all TPS codes - low voltage or intermittent low voltage. Perhaps the idle needs to be tuned. The high spark peak is due to a choppy idle and is caused by the Idle Underspeed/Overspeed spark tables. It will peak/trough at +/-9* depending how far out the Idle RPM is from the deisred Idle RPM.

  5. #5
    Tuner in Training
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    Re: DTC 1122 & 0122 TPS on a 2000 LS1

    Quote Originally Posted by MNR-0
    They are all TPS codes - low voltage or intermittent low voltage. Perhaps the idle needs to be tuned. The high spark peak is due to a choppy idle and is caused by the Idle Underspeed/Overspeed spark tables. It will peak/trough at +/-9* depending how far out the Idle RPM is from the deisred Idle RPM.
    Thanks,

    I"ll look into the Idle RMP tables and see what I can figure out.
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    2001 TA ~ 2000 TA ~ 95 TA - Sold ~ 87 FB - Buried in New Mexico ~ 86 FB - Sold