Contents Wiring diagrams Section: Automatic HVAC System All sections

DTC B0163 Cadillac STS I

The HVAC control module detects the inside air temperature sensor signal circuit is less than 2 counts or more than 253 counts for 30 seconds.

Action Taken When the DTC Sets

  1. The DIC will display 15°C (59°F) for outside air temperature.
  2. The DIC will display SERVICE A/C SYSTEM.