What does the code P1330 mean on a S80 Volvo?

The code P1330 on a Volvo S80 indicates a problem with the Variable Valve Timing (VVT) system, specifically related to the VVT actuator or its control. This can result in poor engine performance, reduced fuel efficiency, and increased emissions. It is advisable to check the VVT solenoid, wiring, and timing belt for any issues, and to clear the code after repairs to see if it reoccurs.