Scania EMS DTC 6489 Actuator for exhaust brake M4000

EMS Engine Management System · Scania

Code 6489 (decimal). Some diagnostic tools show it in hexadecimal as 1959.

In short

The actuator for exhaust brake M4000 reports that the engine performance has been limited.

Applies to: EMS S8

What does Scania EMS fault code 6489 mean?

What causes Scania DTC 6489?

How does the system react?

How to fix Scania EMS fault code 6489?

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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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