Scania EMS DTC 4169 Emissions of nitrogen oxides (NOx)

EMS Engine Management System · Scania · 4 variants

Code 4169 (decimal). Some diagnostic tools show it in hexadecimal as 1049.

In short

The measured level of nitrogen oxides downstream of the catalytic converter is higher than expected.

Variant 1: SCR system, NOx content too high

Applies to: EMS10

What does Scania EMS fault code 4169 mean?

What causes Scania DTC 4169?

How to fix Scania EMS fault code 4169?

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Variant 2

Applies to: EMS S6

Variant 3: SCR system

Applies to: EMS S8

Variant 4: SCR system

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 4169 in other Scania systems

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