I have a 2007 Honda Odyssey that is giving me a problem. When I was driving it home all of a sudden the check engine light and the VSA light came on. The van proceeded to drive ok until I stepped on the gas, then the RPM's would rev up and down quickly like it would it I was idling and had the gas pushed all the way to the floor. I brought it home and hooked up my scan tool and noticed that it gave me a P2647  "A" rocker arm actuator system stuck on Bank 1, all 6 cylinders misfire codes, random/multiple cylinder misfire code, ECU failure information: PGM-FI relation failure & B-1222 MODE motor (Rr) Potentiometer shorted. So after some research I decided to replace the oil pressure switch down by the oil filter and the oil pressure sensor on the top of the motor. Now I used an OEM oil pressure switch, but I used and off brand oil pressure sensor (because the sensor was very expensive for an OEM replacement). I so replace the battery terminals, but that needed done before this started. Any help would be greatly appreciated!