Scania EMS DTC 4391 Cylinder balancing, cylinder 7

EMS Engine Management System · Scania

Code 4391 (decimal). Some diagnostic tools show it in hexadecimal as 1127.

In short

The highest level to which the control unit can adjust the fuel volume for the cylinder has been reached.

Applies to: EMS S6

What does Scania EMS fault code 4391 mean?

What causes Scania DTC 4391?

How does the system react?

How to fix Scania EMS fault code 4391?

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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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