Home >> Jaguar >> 2017 >> XF S, AWD >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Body Control Module (BCM) - LWB -- XF/X260 >> Diagnostic Trouble Code Index DTC: Body Control Module (BCM) - LWB >> Description And Operation >> Body Control Module (BCM) >> DTC B124B-85: Left Daytime Running Light - Signal above allowable range >> Possible Causes