Scania CMS DTC 825 Secondary battery master switch, short circuit to earth

CMS CMS control unit · Scania

Code 825 (decimal). Some diagnostic tools show it in hexadecimal as 0339.

In short

The signal from the secondary battery master switch is too low.

Applies to: CMS1 (CMS)

What does Scania CMS fault code 825 mean?

What causes Scania DTC 825?

How to fix Scania CMS fault code 825?

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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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