Scania COO DTC 931 OBD CAN bus, no communication

COO Coordinator · Scania

Code 931 (decimal). Some diagnostic tools show it in hexadecimal as 0003A3.

In short

All communication on the OBD CAN bus is interrupted.

Applies to: COO10 (COO)COO11 (COO)

What does Scania COO fault code 931 mean?

What causes Scania DTC 931?

What are the symptoms?

How to fix Scania COO fault code 931?

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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.