I need professional help from someone who knows about lexus or toyota. I have a 1999 lexus es 300 vvt-i coach edition. My check engine is on and vsc is on. I had someone put a computer reader to the car and read the problem with the device. Now it says p0330 knock sensor malfunction , and air fuel ratio sensor malfunction bank 2. Now here is the problem. When i start my car on a cold start. it shifts throughout all gears fine, but when i get off the 4th gear back to 1st when im at a dead stop it will stay to 3rd gear and not shift back until the car has rested for about a hour (off). Now I was told the air fuel ratio sensor is the cause of this and it will not let it shift to 4th. When the computer read my cars code it gave P0330 which is the air fuel ratio sensor bank 2. Now am i on the right track and if i get this part will my car shift to fourth gear?