Scania ALM DTC 599 Micro switch extra sensor 3 (truck)/micro switch E3 (bus), open circuit or short circuit

ALM ALM control unit · Scania · 2 variants

Code 599 (decimal). Some diagnostic tools show it in hexadecimal as 0257.

In short

The micro switch has an open circuit or is short-circuited to the voltage supply.

Variant 1

Applies to: ALM1 (ALM)

What does Scania ALM fault code 599 mean?

What causes Scania DTC 599?

How does the system react?

What are the symptoms?

How to fix Scania ALM fault code 599?

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Variant 2: Extra sensor 3, open or short 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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