Scania BMU DTC 773 Coolant pump (M38/M82), fault in CAN communication

BMU Battery Management Unit · Scania · 2 variants

Code 773 (decimal). Some diagnostic tools show it in hexadecimal as 0305.

In short

CAN message from coolant pump has not been sent.

Variant 1

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 773 mean?

What causes Scania DTC 773?

How does the system react?

How to fix Scania BMU fault code 773?

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Variant 2: CAN communication with coolant pump M38

Applies to: BMU5

This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

Code 773 in other Scania systems

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