Scania fault code 4149
Code 4149 is used by 4 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
SCR - Main unit
Internal fault in the main unit.
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EMU
Temperature sensor T259, AC battery circuit, short circuit to earth
The control unit gives an implausibly low voltage, which indicates a short circuit to earth.
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DDU
Red warning light-emitting diode, short circuit to voltage supply
The DDU control unit has interpreted a short circuit to voltage supply on the red warning light-emitting diode in the interactive driver display.
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LAS Locking and Alarm System
Remote control 14
The control unit has detected that the signal from the remote control is weak.
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