Scania BMU DTC 4240 UI sensor for propulsion battery, break in circuit

BMU Battery Management Unit · Scania

Code 4240 (decimal). Some diagnostic tools show it in hexadecimal as 001090.

In short

No current draw on the pins for UI sensor T282's voltage supply even though the UI sensor is activated.

Applies to: BMU7 (BMUA)BMU7 (BMUB)BMU7 (BMUC)BMU7 (BMUD)BMU7 (BMUE)BMU7 (BMUF)BMU7 (BMUG)BMU7 (BMUH)BMU7 (BMUI)BMU7 (BMUJ)BMU7 (BMUK)BMU7 (BMUL)BMU7 (BMUM)BMU7 (BMUN)BMU7 (BMUO)BMU7 (BMUP)

What does Scania BMU fault code 4240 mean?

What causes Scania DTC 4240?

What are the symptoms?

How to fix Scania BMU fault code 4240?

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 4240 in other Scania systems

Compare code 4240 in every system →