Scania EMS DTC 42244 Communication between the NOx sensor downstream of the catalytic converter and the SCR control unit.

EMS Engine Management System · Scania

Code 42244 (decimal). Some diagnostic tools show it in hexadecimal as A504.

In short

The SCR control unit has no CAN message from the NOx sensor.

Applies to: EMS S6

What does Scania EMS fault code 42244 mean?

What causes Scania DTC 42244?

How to fix Scania EMS fault code 42244?

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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.