Scania MBS DTC 850 Auxiliary heater, no flame start

MBS MBS control unit · Scania

Code 850 (decimal). Some diagnostic tools show it in hexadecimal as 0352.

In short

The auxiliary heater detects no flame start.

Applies to: MBS3 (MBS)

What does Scania MBS fault code 850 mean?

What causes Scania DTC 850?

How does the system react?

What are the symptoms?

How to fix Scania MBS fault code 850?

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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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