Scania fault code 4612
Code 4612 is used by 2 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Rotational speed sensor
The signal from rotational speed sensor T74 has indicated an implausible rotational speed increase between two subsequent pulses.
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DDU
IRLED current
IRLED current fault is set when its identified in the metadata sent from the camera.
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