Scania fault code 4248
Code 4248 is used by 2 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMU
Contactor unit R126, positive contactor, voltage class B to bodywork outside range
The UI sensor reports voltage outside the approved range.
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DDU
Faulty USB device plugged into driver's side USB port
The USB port cannot communicate with the connected USB device.
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