Scania DDU DTC 2339 Hazard warning signal switch module, switch fault

DDU DDU control unit · Scania

Code 2339 (decimal). Some diagnostic tools show it in hexadecimal as 000923.

In short

The DDU control unit interprets that a switch in the hazard warning signal switch module is stuck in the depressed position.

Applies to: DDU1 (DDU)

What does Scania DDU fault code 2339 mean?

What causes Scania DTC 2339?

How does the system react?

What are the symptoms?

How to fix Scania DDU fault code 2339?

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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.

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