Home >> Land Rover >> 2021 >> Discovery S >> Repair and Diagnosis (Single Page) >> 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 B153D-19: Right Deployable Side Step Illumination - Circuit current above threshold >> Possible Causes