Scania EMS DTC 43593 Air pressure in the SCR system

EMS Engine Management System · Scania

Code 43593 (decimal). Some diagnostic tools show it in hexadecimal as AA49.

In short

The air pressure downstream of the restriction valve in the SCR system is too high.

Applies to: EMS S6

What does Scania EMS fault code 43593 mean?

What causes Scania DTC 43593?

How does the system react?

How to fix Scania EMS fault code 43593?

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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.