Scania DDU DTC 772 CSS control system, no CAN communication

DDU DDU control unit · Scania

Code 772 (decimal). Some diagnostic tools show it in hexadecimal as 000304.

In short

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

Applies to: DDU1 (DDU)

What does Scania DDU fault code 772 mean?

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

What causes Scania DTC 772?

- The CSS control unit is not connected to the cable harness for CAN communication. - Incorrectly set parameters in the DDU control unit.

How does the system react?

Yellow warning indication is displayed. A yellow warning message for an airbag fault is displayed.

How to fix Scania DDU fault code 772?

  1. Check the harness-to-component connector to the CSS control unit.
  2. Check the cable harness for CAN communication.
  3. Spare part program the DDU control unit.

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

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