Scania fault code 4243
Code 4243 is used by 2 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMU
Contactor unit R126, fault in UI sensor
Internal fault in the UI sensor.
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BMU Battery Management Unit
UI sensor for propulsion battery, short circuit to voltage supply
The control unit indicates a short circuit to voltage supply on the pins for the voltage supply to UI sensor T282.
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