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Home >> Chevrolet >> 2009 >> Chevy Express G2500, Van Cargo Extended, 6.6 6 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 6.6L LMM - DTC P1224 To DTC P2463 >> DTC P154A >> Circuit/System Verification

Circuit/System Verification

  1. Observe that the IAH Feedback CKT Status parameter displays OK.
  2. Observe that the IAH Driver Shorted parameter displays OK.
  3. Engine running, observe the DTC information with a scan tool. DTC P154A should not set.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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