Scania EMS DTC 1771 NOx sensor downstream of the catalytic converter is not supported

EMS Engine Management System · Scania

Code 1771 (decimal). Some diagnostic tools show it in hexadecimal as 0006EB.

In short

The NOx sensor message on software version is not received or does not match any supported sensor.

Applies to: EMS10

What does Scania EMS fault code 1771 mean?

What causes Scania DTC 1771?

What are the symptoms?

How to fix Scania EMS fault code 1771?

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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 1771 in other Scania systems