Scania fault code 4204

EMS Engine Management System Exhaust gas pressure sensor T125 and the internal atmospheric pressure sensor in coordinator E30 The exhaust gas pressure sensor indicates a lower value than the atmospheric pressure sensor. Read explanation → EMU Refrigerant compressor E158, internal fault The refrigeration compressor is reporting that the temperature is too high (above 110°C). The fault code may expire by itself, the refrigeration compressor updates the status every… 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 2, short circuit to voltage supply The external amplifier has measured a voltage that indicates a short circuit to battery voltage. Read explanation →