Scania fault code 4205
Code 4205 is used by 4 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Exhaust gas pressure sensor T125 and the internal atmospheric pressure sensor in coordinator E30
The exhaust pressure sensor indicates a higher value than the atmospheric pressure sensor.
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EMU
Refrigerant compressor E158, internal fault
The refrigeration compressor reports too high a temperature in the transistor (above 95°C for 5 seconds). The fault code may expire by itself, the refrigeration compressor updates…
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BMU Battery Management Unit
Cell monitoring circuit board, communication fault
It is not possible to read necessary information from the cell monitoring circuit board.
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DDU
External amplifier, channel 2, short circuit to earth
The DDU control unit has measured a voltage that indicates a short circuit to earth.
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