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Home >> Cadillac >> 2007 >> DTS 4.6 9 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 4.6L - DTC P0351 To P2440 >> DTC P0401 >> Circuit/System Verification
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Circuit/System Verification

  1. If DTCs P0107, P0108, P0403, P0404, P0405, or P0406 are also set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
  2. If the vehicle passes the Circuit/System Verification, then operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that are captured in the Freeze Frame/Failure Records data list.
  3. Engine running, observe the DTC information with a scan tool. DTC P0401 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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