Scania fault code 4206
Code 4206 is used by 3 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMU
Refrigerant compressor E158, internal fault
The refrigeration compressor is reporting an internal fault. The fault code may expire by itself, the refrigeration compressor updates the status every 15 seconds.
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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.
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DDU
External amplifier, channel 2, break in the circuit
The DDU control unit has measured a voltage that indicates a break in the circuit.
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