C0003 - Chassis Fault Code C0003 - ABS / Bromssystem (Hjulhastighetssensorer & Ventiler)

DTC C0003 is set when the Electronic Brake Control Module (EBCM) detects a circuit malfunction in the TCS Control Channel 'A' Valve 2 circuit. The module's internal diagnostic monitoring measures impedance, current draw, and flyback response across the solenoid coil. If the measured current falls outside the nominal window during internal power-on self-tests (POST) or bi-directional activation—caused by an open circuit, short-to-ground, or defective low-side driver—the DTC is latched and stability control functions are disabled.