Scania EMS DTC 4257 CAN communication between TMS and EMS

EMS Engine Management System · Scania

Code 4257 (decimal). Some diagnostic tools show it in hexadecimal as 0010A1.

In short

Open circuit in CAN communication between TMS and EMS.

Applies to: EMS10

What does Scania EMS fault code 4257 mean?

What causes Scania DTC 4257?

How to fix Scania EMS fault code 4257?

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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 4257 in other Scania systems