Scania BMU DTC 12579 Coolant pump shorted to earth.

BMU Battery Management Unit · Scania

Code 12579 (decimal). Some diagnostic tools show it in hexadecimal as 003123.

In short

The coolant pump's voltage supply is short-circuited to earth.

Applies to: BMU7 (BMUA)BMU7 (BMUB)BMU7 (BMUC)BMU7 (BMUD)BMU7 (BMUE)BMU7 (BMUF)BMU7 (BMUG)BMU7 (BMUH)BMU7 (BMUI)BMU7 (BMUJ)BMU7 (BMUK)BMU7 (BMUL)BMU7 (BMUM)BMU7 (BMUN)BMU7 (BMUO)BMU7 (BMUP)

What does Scania BMU fault code 12579 mean?

What causes Scania DTC 12579?

How does the system react?

How to fix Scania BMU fault code 12579?

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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.

Code 12579 in other Scania systems