I have a 2002 ford Taurus wagon and three codes P0174, p0303, p0316 I changed

Question

I changed the crank shaft sensor, plugs wires, and coil pack, mass air flow sensor but I can't find out what is wrong with the car. also sensor2 bank2 whereis that bychance

Answer 1

P0174 Lean fuel trim bank 1

P0303 misfire # 3 cylinder

P0316 Misfire monitor

The lean system is caused by # cylinder, This is more likely to be a injector that is not firing.