Scania fault code 4151
Code 4151 is used by 3 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMU
Refrigerant compressor E158, overheating
The control unit indicates overheating, critical level.
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DDU
Yellow warning light-emitting diode, short circuit to earth
The DDU control unit has interpreted a short circuit to earth for yellow warning light-emitting diode in the driver display.
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LAS Locking and Alarm System
Remote control 16
The control unit has detected that the signal from the remote control is weak.
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