Home >> Land Rover >> 2021 >> Discovery R-Dynamic HSE >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Tow Bar Control Module (TBCM) -- Discovery/L462 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: TOWBAR Control Module (TBCM) (G2016143) >> DTC B153C-19: Left Deployable Side Step Illumination - Circuit current above threshold >> Possible Causes