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Home >> Pontiac >> 2008 >> Torrent GXP, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 3.6L - DTC P2636 >> DTC P2097 or P2099 >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON, observe the scan tool DTC information. Verify DTCs P0137, P0138, or P0140 are not also set.
    2. CAUTION: Refer to Road Test Caution .
    IMPORTANT: The rear heated oxygen sensor (HO2S) must be in closed loop for this diagnostic to run. A road load condition is necessary to obtain closed loop.
  2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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