Scania EMS DTC 55 Lambda sensor

EMS Engine Management System · Scania · 2 variants

Code 55 (decimal). Some diagnostic tools show it in hexadecimal as 0037.

In short

Lambda sensor preheating shows too low a value.

Variant 1

Applies to: EMS S7

What does Scania EMS fault code 55 mean?

What causes Scania DTC 55?

How does the system react?

How to fix Scania EMS fault code 55?

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 55 in other Scania systems

Compare code 55 in every system →