Home >> Jaguar >> 2018 >> E-Pace Base >> Repair and Diagnosis (Single Page) >> Quick Lookups >> Common Specs & Procedures >> General Information - Diagnostic Trouble Code (DTC) Index (ASCM - BCM) -- E-Pace/X540 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Body Control Module [BCM] (C2159737) >> DTC B124B-86: Left Daytime Running Light - Signal invalid >> Possible Causes