Scania EMS DTC 4404 Coolant temperature sensor T33 or the temperature sensor in the electric motor of variable geometry turbocharger M30

EMS Engine Management System · Scania · 2 variants

Code 4404 (decimal). Some diagnostic tools show it in hexadecimal as 1134.

In short

The coolant temperature sensor has detected that the coolant temperature is too high for OBD to run.

Variant 1: The coolant system, temperature over limit value

Applies to: EMS10

What does Scania EMS fault code 4404 mean?

What causes Scania DTC 4404?

How to fix Scania EMS fault code 4404?

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: EMS S8

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

Code 4404 in other Scania systems

Compare code 4404 in every system →