Scania BMU DTC 801 The contactor unit has exceeded its service life

BMU Battery Management Unit · Scania · 2 variants

Code 801 (decimal). Some diagnostic tools show it in hexadecimal as 0321.

In short

The contactor unit for propulsion battery E83 has expired after one of the following: - 30,000 activations at normal load - 15 activations at medium load - 2 activations at high load - 1 activation with an extremely high…

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 801 mean?

What causes Scania DTC 801?

How does the system react?

What are the symptoms?

How to fix Scania BMU fault code 801?

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Variant 2

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 801 in other Scania systems

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