Home >> Land Rover >> 2017 >> Range Rover Autobiography >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Diagnostic Trouble Code Index DTC: Image Processing Module B - High Line (IPMB - High Line) -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: Image Processing Module B - High Line (IPMB - High Line) >> Description And Operation >> DTC B12C0-31: Left Mirror Camera - No signal >> Possible Causes