Scania EEC DTC 4646 Fuel injection for exhaust gas aftertreatment

EEC Exhaust Emission Control · Scania

Code 4646 (decimal). Some diagnostic tools show it in hexadecimal as 1226.

In short

The fuel pressure in the valve block for exhaust gas aftertreatment is too high when the fuel valve for the fuel injection nozzle is open.

Applies to: EEC3

What does Scania EEC fault code 4646 mean?

What causes Scania DTC 4646?

How does the system react?

How to fix Scania EEC fault code 4646?

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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.

Code 4646 in other Scania systems