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Home >> GMC >> 2010 >> Terrain SLT, 2.4 W, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 2.2L Or 2.4L - DTC P1255 To DTC P2635 >> DTC P15A1 >> Circuit/System Verification

Circuit/System Verification

  1. If you cannot duplicate the condition, refer to Testing for Intermittent Conditions and Poor Connections .
  2. Verify that DTCs P159F and P015A0 are not set.
  3. Engine running, observe the DTC information with a scan tool. DTC P15A1 should not set.
  4. 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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