Scania EMD DTC 4591 Fan drive control system, internal fault

EMD EMD control unit · Scania

Code 4591 (decimal). Some diagnostic tools show it in hexadecimal as 11EF.

In short

The fan drive control system (FDC) indicates an internal fault.

Applies to: EMD1

What does Scania EMD fault code 4591 mean?

What causes Scania DTC 4591?

How does the system react?

What are the symptoms?

How to fix Scania EMD fault code 4591?

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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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