Scania fault code 4194
Code 4194 is used by 8 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Alternator P3
The alternator is indicating that it is not charging despite being activated, i.e. when engine speed is at idling or above.
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EMU
Control unit E159 (EMU), supply signal, high voltage
The control unit shows unreasonably high voltage.
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BMU Battery Management Unit
Cell monitoring circuit board, communication fault
Chip for cell balancing in a cell monitoring circuit board reports faults.
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EMD
Alternator P3
The alternator is indicating that it is not charging despite being activated, i.e. when engine speed is at idling or above.
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EME
Alternator
The alternator is indicating that it is not charging despite being activated, i.e. when engine speed is at idling or above.
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EMO
Alternator P3
The alternator is indicating that it is not charging despite being activated, i.e. when engine speed is at idling or above.
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DDU
Switch module in the steering wheel for instrument cluster: Quick selection, no signal
Information is missing, update is in progress.
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ICL Instrument Cluster
Display lighting
Internal fault. Display lighting does not work.
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