Scania fault code 4203

EMS Engine Management System Exhaust gas pressure sensor T125 and charge air pressure sensor T122 The exhaust pressure sensor indicates a higher value than the charge air pressure sensor. Read explanation → EMU Refrigerant compressor E158, internal fault The refrigeration compressor reports currents that are too high. The fault code may expire by itself, the refrigeration compressor updates the status every 30 seconds. 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, break in the circuit The DDU control unit has measured a voltage that indicates a break in the circuit. Read explanation →