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Home >> Cadillac >> 2006 >> STS V >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 4.4L - DTC P0010 To P0175 >> DTC P0068 or P0121 >> Circuit/System Verification
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Circuit/System Verification

  1. If DTCs P0101, P0106, P0120, P0220, and P1182 are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
  2. Ignition ON, observe the scan tool BARO, MAP, and the SC Inlet Pressure sensor parameters. The readings should be within the range specified for your altitude. Determine the altitude at your current location and refer to Altitude Versus Barometric Pressure .
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