Scania BMU DTC 3148 Propulsion battery, contactor, high risk of fault

BMU Battery Management Unit · Scania

Code 3148 (decimal). Some diagnostic tools show it in hexadecimal as 000C4C.

In short

Voltage measurement before and after contactors indicates abnormal behaviour when opening contactors.

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 3148 mean?

What causes Scania DTC 3148?

How does the system react?

How to fix Scania BMU fault code 3148?

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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.