Scania fault code 842
Code 842 is used by 4 different Scania systems. Choose the control unit shown in your diagnostic tool:
BMU Battery Management Unit
Fan M40 for cooling MGS and DCC, short circuit
Electrical fault in fan M40.
Read explanation →
COO Coordinator
CAN communication with switch module
Fault in communication with the switch module.
Read explanation →
MBS
Auxiliary heater combustion air fan, out of order
The auxiliary heater has detected that the combustion air fan is out of order.
Read explanation →
CMS
Pressure sensor for tag axle lift, short circuit to voltage supply
Pressure sensor for tag axle lift sends an incorrect signal or has too high voltage.
Read explanation →