Scania DDU DTC 4166 Tweeter on left-hand A-pillar panel, break in circuit

DDU DDU control unit · Scania

Code 4166 (decimal). Some diagnostic tools show it in hexadecimal as 001046.

In short

The DDU control unit interprets a break in the circuit of the tweeter on the left-hand A-pillar panel.

Applies to: DDU1 (DDU)

What does Scania DDU fault code 4166 mean?

What causes Scania DTC 4166?

How does the system react?

What are the symptoms?

How to fix Scania DDU fault code 4166?

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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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