Scania EMS DTC 4199 Charge air pressure sensor T122

EMS Engine Management System · Scania · 4 variants

Code 4199 (decimal). Some diagnostic tools show it in hexadecimal as 1067.

In short

The EMS control unit has detected that the value displayed by the atmospheric pressure sensor is too low compared with other atmospheric pressure sensors in the vehicle.

Variant 1: Atmospheric pressure sensor in EMS control unit, value too low

Applies to: EMS10

What does Scania EMS fault code 4199 mean?

What causes Scania DTC 4199?

What are the symptoms?

How to fix Scania EMS fault code 4199?

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 S7

Variant 3

Applies to: EMS S8

Variant 4: Combined sensor T47

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 4199 in other Scania systems

Compare code 4199 in every system →