Scania BMU DTC 1559 Contactor unit electrical power take-off, incorrectly connected to propulsion battery

BMU Battery Management Unit · Scania

Code 1559 (decimal). Some diagnostic tools show it in hexadecimal as 0617.

In short

Negative voltage was measured to the electrical power take-off contactor unit during pre-charging.

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 1559 mean?

What causes Scania DTC 1559?

How does the system react?

How to fix Scania BMU fault code 1559?

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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 1559 in other Scania systems