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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls And Fuel - 2.0L (LTG) - DTC P0335 To DTC P2635 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P2227-P2230: Barometric Pressure (BARO) Sensor >> Circuit/System Verification

Circuit/System Verification

  1. Ignition On.
  2. Verify the scan tool BARO parameter is within the range specified in the Altitude Versus Barometric Pressure (With LFX) table.
    • If the BARO is not within the specified range 

      Refer to Circuit/System Testing.

    • If the BARO is within the specified range 
  3. Verify the scan tool Boost Pressure parameter and the BARO parameter are within 3 kPa (0.43 psi).
    • If not within 3 kPa (0.43 psi) 

      Refer to DTC P0236 .

    • If within 3 kPa (0.43 psi) 
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed in the Freeze Frame/Failure Records data.
  5. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • If the DTC does not set 
  6. All OK.