Scania fault code 1859

Code 1859 is used by 3 different Scania systems. Choose the control unit shown in your diagnostic tool:

MBS MBS expansion unit C, current above limit value MBS expansion unit C has detected that the limit values for the current to and from the MBS expansion unit have been exceeded. Read explanation → CID Fault in the internal voltage supply Fault in the internal voltage supply detected. Read explanation → DD Fault in the internal voltage supply Fault in the internal voltage supply detected. Read explanation →