Scania DDU DTC 1801 DDU control unit, unexpected system reset

DDU DDU control unit · Scania

Code 1801 (decimal). Some diagnostic tools show it in hexadecimal as 000709.

In short

Information is missing, update is in progress.

Applies to: DDU1 (DDU)

What does Scania DDU fault code 1801 mean?

Information is missing, update is in progress.

What causes Scania DTC 1801?

1) The system has performed a reset, and the system voltage was between ~4,5V and 8V when ignition on. The most probable cause is extremely low voltage.

How does the system react?

TBD

What are the symptoms?

tbd

How to fix Scania DDU fault code 1801?

  1. Inform driver of correct handling of battery master switch.
  2. Do not leave ignition on without engine running.

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

Code 1801 in other Scania systems

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