Scania EMS DTC 5771 Electric motor of the M30 variable geometry turbocharger

EMS Engine Management System · Scania · 3 variants

Code 5771 (decimal). Some diagnostic tools show it in hexadecimal as 168B.

In short

The electric motor of the M30 variable geometry turbocharger has reported a control fault.

Variant 1

Applies to: EMS S7EMS S8

What does Scania EMS fault code 5771 mean?

What causes Scania DTC 5771?

How does the system react?

How to fix Scania EMS fault code 5771?

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: Engine Variable Geometry Turbocharger Actuator #1, Actuator has taken internal action to limit the motor effort for protection.

Applies to: EMS10

Variant 3

Applies to: EMS S8 (S8PDE)

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

Code 5771 in other Scania systems

Compare code 5771 in every system →