Circuit/System Verification

WARNING: This page is about a different car, the 2018 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON, verify that DTC DTC P0641, P0651, P0697, P06A3, P06D2 or P06D6 is not set.
- If any of the DTCs are set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
- Go to next step: If none of the DTCs are set
Determine the current vehicle testing altitude.
Verify the scan tool MAP Sensor pressure parameter is within the range specified in the Altitude Versus Barometric Pressure table.
- If the MAP Sensor parameter is not in range
  Refer to Circuit/System Testing for further diagnosis.
- Go to next step: If the MAP Sensor parameter is within range
Engine idling, verify the scan tool MAP Sensor pressure parameter is between 24 - 52 kPa (3.4 - 7.5 PSI) and changes with accelerator pedal input.
- If not between 24 - 52 kPa (3.4 - 7.5 PSI) or does not change
  Refer to Circuit/System Testing.
- Go to next step: If between 24 - 52 kPa (3.4 - 7.5 PSI) and changes
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.
Verify a DTC does not set.
- If any DTC sets
  Refer to Circuit/System Testing.
- Go to next step: If no DTC sets
All OK.