Scania fault code 4201

EMS Engine Management System Charge air pressure sensor T122 or the internal atmospheric pressure sensor in coordinator E30 The engine control unit indicates that the internal barometer is showing a pressure outside the permitted measurement range. This indicates a fault in the engine control unit. Read explanation → EMU EVCB2 VCB Refrigerant Compressor B has raised internal fault "Over Voltage". EVCB2 VCB Refrigerant Compressor B communicates the fault when the VCB voltage exceeds 850 V for 2 seconds. The EVCB2 will re-evaluate the fault after 10 seconds and invalidate the… Read explanation → BMU Battery Management Unit Cell monitoring circuit board, internal fault A chip in a cell monitoring circuit board reports a reference value outside the permitted range. Read explanation → DDU External amplifier, channel 1, short circuit to voltage supply The external amplifier has measured a voltage that indicates a short circuit to battery voltage. Read explanation →