Scania DDU DTC 798 EACS control unit, no CAN communication

DDU DDU control unit · Scania

Code 798 (decimal). Some diagnostic tools show it in hexadecimal as 00031E.

In short

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

Applies to: DDU1 (DDU)

What does Scania DDU fault code 798 mean?

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

What causes Scania DTC 798?

- The EACS control unit is not connected to the cable harness for CAN communication. - The fuse for the EACS control system has tripped. - Fault in the coordinator.

How does the system react?

Red warning indication of a fault in the EACS control unit is displayed.

How to fix Scania DDU fault code 798?

  1. Check the harness-to-component connector for the EACS control unit.
  2. Check the fuse for the EACS control system.
  3. Check and rectify fault codes for the coordinator and EACS control system.

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

Code 798 in other Scania systems

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