Scania BMU DTC 4203 Cell monitoring circuit board, internal fault

BMU Battery Management Unit · Scania

Code 4203 (decimal). Some diagnostic tools show it in hexadecimal as 00106B.

In short

A chip in a cell monitoring circuit board reports a reference value outside the permitted range.

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 4203 mean?

What causes Scania DTC 4203?

How to fix Scania BMU fault code 4203?

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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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