Scania MBS DTC 846 Starting the auxiliary heater, delayed start

MBS MBS control unit · Scania

Code 846 (decimal). Some diagnostic tools show it in hexadecimal as 034E.

In short

The auxiliary heater does not start within the expected time after a successful ignition.

Applies to: MBS3 (MBS)

What does Scania MBS fault code 846 mean?

What causes Scania DTC 846?

How does the system react?

What are the symptoms?

How to fix Scania MBS fault code 846?

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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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