P0340 Camshaft Position Sensor circuit thingamabob. We pulled the code toady at work. already have a new sensor on order. im trying to figure out why my car is killing a tank every other day granted yea its 100 miles of driving a day but still i figure the tank would last at least a lil longer.
Not sure if it would cause bad gas mileage but you may not need a new sensor. Some 2002s have issues with codes coming up for what seems like no reason, this is one of them. There are a lot of threads on NASIOC about this from 2003-2005, all suggesting an ECU reflash fix. For example.