Autolamp System DTCs
WARNING: This page is about a different car, the 2013 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- DTC B1A85:11 (Ambient Light Sensor: Circuit Short To Ground) - This DTC sets when the BCM detects a short to ground from the light sensor input circuit.
- DTC B1A85:13 (Ambient Light Sensor: Circuit Open) - This DTC sets when the BCM detects an open or short to voltage from the light sensor input circuit.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Light sensor
- Headlamp switch
- SCCM
- BCM