Scania EEC DTC 4666 Fuel injection for exhaust gas aftertreatment

EEC Exhaust Emission Control · Scania

Code 4666 (decimal). Some diagnostic tools show it in hexadecimal as 123A.

In short

Fault in injection valve for exhaust gas aftertreatment V185.

Applies to: EEC3

What does Scania EEC fault code 4666 mean?

What causes Scania DTC 4666?

How does the system react?

How to fix Scania EEC fault code 4666?

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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.