Scania EMS DTC 42049 Thawing of reductant in the SCR system

EMS Engine Management System · Scania

Code 42049 (decimal). Some diagnostic tools show it in hexadecimal as A441.

In short

The pressure in the SCR system does not fall as expected when the injection valve is open.

Applies to: EMS S6

What does Scania EMS fault code 42049 mean?

What causes Scania DTC 42049?

How does the system react?

How to fix Scania EMS fault code 42049?

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