This error P3409 Code is found from the car engine and meaning of the code helps to understand the problem of the car engine. The car engine system, in conjunction with the engine control module (ECM) or powertrain control module (PCM), triggers the engine P3409 code solenoid valve to switch oil pressure to the engine mechanism that is installed in the valve method to switch valve timing between Low and High. If the engine solenoid valve has an exposed or short circuit, a DTC is stored. You should keep any problem in the car engine for longer. It is better to solve the car engine fast.