Applies to: CUV3 (VIS)
What does Scania CUV fault code 666 mean?
Right-hand main beam, daytime running light and position light cannot be activated.
What causes Scania DTC 666?
Fault in the voltage supply to the main beam control unit in the right-hand headlamp.
What are the symptoms?
Main beam, daytime running light and position light cannot be activated in the right-hand headlamp.
How to fix Scania CUV fault code 666?
Check the cable harness and connections for the main beam voltage supply in the right-hand headlamp.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.