2004 Mercury Sable • 6 cylinder FWD •

I have an '04 Sable, it skips and misses going down the road. Check engine light has come on but when I got off work to go have it read th light went off on the way to Autozone. Any idea, also the digital readout only says all the doors are open and not the mileage?
July 23, 2011.

Have the computer scanned for code/s and comeback if any present

Could be caused by one of the following below

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note: If it doesn't apply disregard it and keep testing.

Jul 23, 2011.
Had it scanned twice won't read, told me to. Come back when. Check engine was on.

Jul 23, 2011.