Variable Timing Lift Solenoid

Often the VVT solenoid is not getting sufficient oil pressure to activate, so be sure that your motor is fairly clean before buying the solenoid. You might even try flushing after using a cleaner additive for awhile. But if the fault is the electrical operation of the solenoid then just replace the errant side, as they generally fail idiosyncratically and separately. If replacing the one sensor repeats the same code (same side), then you know the oil line is clogged. Have fun; it's pretty easy DIY stuff. Ern TSG/B