Scania BMU DTC 837 Fan to rechargeable energy storage system

BMU Battery Management Unit · Scania

Code 837 (decimal). Some diagnostic tools show it in hexadecimal as 0345.

In short

Cooling from the fan is less effective than expected.

Applies to: BMU5

What does Scania BMU fault code 837 mean?

What causes Scania DTC 837?

What are the symptoms?

How to fix Scania BMU fault code 837?

Read the full explanation with Premium

Causes, system reaction, symptoms and step-by-step repair instructions for every fault code are available to Premium members.

  • Full explanations of every code and brand
  • Causes, symptoms and repair steps
  • New brands and codes included
Get Premium – 7,50 € / month I already have an account

Yearly plan: pay 10 months, get 12. Cancel at any time.

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

Code 837 in other Scania systems

Compare code 837 in every system →