Scania COO DTC 777 CAN bus for driver support

COO Coordinator · Scania · 5 variants

Code 777 (decimal). Some diagnostic tools show it in hexadecimal as 0309.

In short

All communication on the CAN bus is interrupted.

Variant 1

Applies to: COO10 (COO)

What does Scania COO fault code 777 mean?

What causes Scania DTC 777?

How does the system react?

What are the symptoms?

How to fix Scania COO fault code 777?

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Variant 2: Driver assistance CAN bus, communication error

Applies to: COO11 (COO)

Variant 3

Applies to: COO8 (COO)

Variant 4

Applies to: COO9 (COO)

Variant 5: Internal CAN bus

Applies to: COO7

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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