Scania EMS DTC 20490 EGR

EMS Engine Management System · Scania · 2 variants

Code 20490 (decimal). Some diagnostic tools show it in hexadecimal as 500A.

In short

The engine control unit has switched off the EGR circuit.

Variant 1

Applies to: EMS S6

What does Scania EMS fault code 20490 mean?

What causes Scania DTC 20490?

How does the system react?

How to fix Scania EMS fault code 20490?

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Variant 2

Applies to: EMS S6 (EMS S6 EuroIII)

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