Scania BCI DTC 631 Gearbox status, CAN communication fault

BCI BCI control unit · Scania · 4 variants

Code 631 (decimal). Some diagnostic tools show it in hexadecimal as 0277.

In short

Faulty information regarding the gearbox status.

Variant 1

Applies to: BCI2 (BWE)

What does Scania BCI fault code 631 mean?

What causes Scania DTC 631?

How does the system react?

How to fix Scania BCI fault code 631?

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.

Variant 2

Applies to: BCI3 (BWE)

Variant 3: Information fault, gearbox status

Applies to: BCI1 (BWE)

Variant 4: Information fault, gearbox status

Applies to: BCI2 (BWE)

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

Code 631 in other Scania systems

Compare code 631 in every system →