Note On Intermittents:

If the ambient temperature drops below about -34°C, this code should be ignored.

If an intermittent Code B110 is being set, manipulate the related wiring while observing BCM data BD26. If the failure is induced, the reading will jump from its normal value to a reading outside the range of -34° to 87°C.

If the value displayed by BD26 is not reasonably close to the actual temperature of the air at the sensor, check for poor terminal contact or replace sensor.

Fig 1: Code B110, Outside Temperature Sensor Circuit (Riviera)

Fig 2: Code B110, Schematic