as far as reading the codes: here are some for your car that might show the problem. The number is the number of flashes on the readout.

12 volume air flow sensor

14 throttle position sensor

23 cam position sensor

41 injector sensor

42 fuel pump

44 ignition coil/ignition power transistor unit

there are others but these seem to be the ones that it would throw for the sympoms given if one of these is the case.