Scania DDU DTC 799 ACS control unit, no CAN communication

DDU DDU control unit · Scania

Code 799 (decimal). Some diagnostic tools show it in hexadecimal as 00031F.

In short

The DDU control unit is not receiving CAN messages from the ACS control unit.

Applies to: DDU1 (DDU)

What does Scania DDU fault code 799 mean?

What causes Scania DTC 799?

How does the system react?

How to fix Scania DDU fault code 799?

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This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

Code 799 in other Scania systems