Circuit/System Verification

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON.
Verify that DTCs P0106, P0107, P0108, P2122, P2123, P2127, P2128, P2138 or P2610 are not set.
- If a DTC is set
  If a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
- If no DTC is set
Ignition ON.
Verify the following scan tool parameters are within range of the Altitude vs. Barometric Pressure table. Refer to: Altitude Versus Barometric Pressure table.
- BARO Sensor
- MAP Sensor
- Turbo Boost Sensor
- If a sensor parameter is not within range
  Refer to the appropriate diagnostic below for further diagnosis.
- Barometric Pressure (BARO) Sensor. Refer to DTC P2227-P2230 (LTG) .
- Manifold Absolute Pressure (MAP) Sensor. Refer to DTC P0106 (LTG) .
- Turbocharger Boost Pressure Sensor. Refer to DTC P0236 .
- If all sensor parameters are within range
All OK