Scania fault code 49
Code 49 is used by 4 different Scania systems. Choose the control unit shown in your diagnostic tool:
VDT
Rotational speed sensor
Fault in the signal or poor signal quality. The rotational speed sensor voltage is too low. The rotational speed sensor signal cannot be processed if the voltage drops below 4.5 V.
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COO Coordinator
Speed signal
The speed signal from the tachograph has been implausible or there has been no signal at all.
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ABS Anti-lock Braking System
Wheel speed
Low signal strength from the wheel on the left-hand side of the driving rear axle.
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LAS Locking and Alarm System
Alarm control unit
Saved data is incorrect or unreliable.
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