Scania EMO DTC 4177 Excessive hydrocarbon level in aftertreatment, engine still running

EMO EMO control unit · Scania

Code 4177 (decimal). Some diagnostic tools show it in hexadecimal as 1051.

In short

The stored hydrocarbon level in the Aftertreatment is above the critical level.

Applies to: EMO2 (EMS)

What does Scania EMO fault code 4177 mean?

What causes Scania DTC 4177?

How does the system react?

How to fix Scania EMO fault code 4177?

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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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