Circuit/System Testing
WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
Engine running, monitor the BARO parameter with the scan tool for a steady value.
- If the BARO parameter is not a steady value, test the BARO circuit for an intermittent short or open. If all circuits test normal, replace the BARO sensor.