Scania BMU DTC 656 The heater is active in the shutdown mode

BMU Battery Management Unit · Scania

Code 656 (decimal). Some diagnostic tools show it in hexadecimal as 0290.

In short

Either the heater temperature increases without a request for increased temperature, or the heater temperature does not drop within a reasonable amount of time after overheating.

Applies to: BMU5BMU6 (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 656 mean?

What causes Scania DTC 656?

How does the system react?

How to fix Scania BMU fault code 656?

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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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