Scania fault code 1039
Code 1039 is used by 4 different Scania systems. Choose the control unit shown in your diagnostic tool:
BMU Battery Management Unit
One or more propulsion batteries do not connect to the class B link
At least one of the vehicle's propulsion batteries does not connect to the class B link when they are expected to do so.
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COO Coordinator
Driver's seat sensor, too low voltage
The driver's seat sensor provides too low a voltage value.
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MBS
Expansion unit K, electric power supply fault
The MBS control unit has detected that the supply voltage to expansion unit K has had an anomalous value. The supply voltage to the expansion unit has been below 16 V.
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TCC
TCC control unit, hand wash pump, short circuit
The control unit has interpreted that there is a short circuit in the signal from the pump for hand washing.
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