Scania ALM DTC 520 Micro switch rear door driver's side (truck)/micro switch A3 (bus), open circuit

ALM ALM control unit · Scania · 2 variants

Code 520 (decimal). Some diagnostic tools show it in hexadecimal as 0208.

In short

Open circuit in the micro switch.

Variant 1

Applies to: ALM1 (ALM)

What does Scania ALM fault code 520 mean?

What causes Scania DTC 520?

How does the system react?

What are the symptoms?

How to fix Scania ALM fault code 520?

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Variant 2: Door lock micro switch in rear door on the driver's side, open circuit

Applies to: ALM1

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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