Scania fault code 748
Code 748 is used by 4 different Scania systems. Choose the control unit shown in your diagnostic tool:
TMS Transmission Management System
BMU control unit, CAN message error
BMU control unit interprets that the CAN message from the BMU control unit is corrupt.
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COO Coordinator
Switch for tag axle 2 with air suspension
The switch has been active an implausible amount of time.
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BCI
Inhibit engine start, CAN communication fault
CAN signals for inhibiting engine start have a delay or are missing.
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CMS
Brake pressure sensor for tag axle
Implausible signal from the brake pressure sensor.
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