When to Perform the Procedure
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Failure to perform this procedure may result in poor system performance, DTCs being set, or customer dissatisfaction. Not all ECMs have the Ambient Air Temperature Calculation Reset function available in the scan tool. If not present in the scan tool, a reset procedure in not necessary.
Perform this procedure when the following component has been serviced: B9 Ambient Air Temperature Sensor or K20 Engine Control Module or Battery - Replaced
Performing the Ambient Air Temperature Calculation Reset can aid in reducing the amount of time needed to attain an accurate temperature display, but driving the vehicle may still be necessary.