Scania EMS DTC 4439 Injector, cylinder 8

EMS Engine Management System · Scania

Code 4439 (decimal). Some diagnostic tools show it in hexadecimal as 1157.

In short

Permanent electrical fault in the injector solenoid valve or in the electrical cables to the injector.

Applies to: EMS S7EMS S8

What does Scania EMS fault code 4439 mean?

What causes Scania DTC 4439?

How does the system react?

How to fix Scania EMS fault code 4439?

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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.

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