COO 631 Scania High split

COO Coordinator · Scania

Code 631 (decimal). Some diagnostic tools show it in hexadecimal as 0277.

In short

The voltage in the high split solenoid valve circuit has been low for longer than permitted.

Applies to: COO7

What does Scania COO fault code 631 mean?

What causes Scania DTC 631?

How does the system react?

How to fix Scania COO fault code 631?

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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 631 in other Scania systems

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