Applies to: COO7
What does Scania COO fault code 623 mean?
The voltage in the high range solenoid valve circuit has been low for longer than permitted.
What causes Scania DTC 623?
The fault may be due to: - The circuit may have been shorted to ground. - Faulty solenoid valve.
How does the system react?
It will not be possible to activate high range as long as the fault is active.
How to fix Scania COO fault code 623?
Check the high range solenoid valve including cable harness and harness-to-harness connectors.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.