What are the symptoms of a faulty camshaft solenoid valve in a Passat?

[AnastasiaLee]

Volkswagen Passat camshaft solenoid valve failure symptoms are as follows: Difficulty starting: When the camshaft solenoid valve fails, the valve cannot open and close freely, resulting in difficulty starting the car; Weak acceleration: When the camshaft solenoid valve fails, the oil drain hole may be closed, preventing effective fuel transfer and combustion, leading to weak acceleration; Engine stalling after starting: If the solenoid valve suddenly closes or malfunctions when the car is started, it can cause the engine to stall; Check engine light on: There are many reasons for the check engine light to come on, and a faulty camshaft solenoid valve is one of them.