Scania EEC DTC 4379 Reductant pump, short circuit to earth

EEC Exhaust Emission Control · Scania

Code 4379 (decimal). Some diagnostic tools show it in hexadecimal as 111B.

In short

Fault in the reductant pump voltage supply circuit.

Applies to: EEC3

What does Scania EEC fault code 4379 mean?

What causes Scania DTC 4379?

How does the system react?

How to fix Scania EEC fault code 4379?

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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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