Scania BMU DTC 12837 Coolant pump, short circuit to earth or open circuit

BMU Battery Management Unit · Scania

Code 12837 (decimal). Some diagnostic tools show it in hexadecimal as 003225.

In short

The coolant pump's feedback signal is short-circuited to earth or has an open circuit.

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 12837 mean?

What causes Scania DTC 12837?

How does the system react?

How to fix Scania BMU fault code 12837?

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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.