Scania fault code 40977

EMS Engine Management System SCR - Main unit Internal fault in the main unit. Read explanation → CCU Fan motor, voltage supply fault The feedback signal from the cab fan to the control unit indicates that the voltage supply to the fan motor is outside the interval between permitted values. Read explanation → ACC Automatic Climate Control Fan motor M3 The voltage supply to the fan motor has been outside the permitted values, i.e. below 16 V or above 32 V. Read explanation → MCC Fan motor M3 The voltage supply to the fan motor has been outside the permitted values, i.e. below 16 V or above 32 V. Read explanation →