Home >> Land Rover >> 2020 >> Discovery Sport Base >> Repair and Diagnosis >> General Information >> Specifications Index >> Diagnostic Trouble Code Index DTC: Chassis Control Module (CHCM) - Discovery Sport/L550 >> Diagnostic Trouble Code Index - DTC: Chassis Control Module (CHCM) (G2309000) >> Description And Operation >> DTC C1B18-2F: Module Power Supplies - Signal erratic >> Possible Causes