Scania BMU DTC 1557 Contactor unit electrical power take-off, open circuit

BMU Battery Management Unit · Scania

Code 1557 (decimal). Some diagnostic tools show it in hexadecimal as 0615.

In short

When the electrical power take-off was connected, the voltage to the power take-off increased abnormally quickly.

Applies to: BMU6 (RES)BMU6 (RESXA)BMU6 (RESXB)BMU6 (RESXC)BMU6 (RESXD)BMU6 (RESXE)BMU6 (RESXF)BMU6 (RESXG)BMU6 (RESXH)BMU6 (RESXI)BMU6 (RESXJ)BMU6 (RESXK)

What does Scania BMU fault code 1557 mean?

What causes Scania DTC 1557?

How does the system react?

How to fix Scania BMU fault code 1557?

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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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