2000 ssei that shuts off while driving usually after a braking but comes back to when you shut off ignition then back on. also a rough idle after a tune up autolite plugs and msd wires i'm going to try to clean map sensor tommorrow to see if that takes care of the idle.
What year and model car do you have? Could you put that in your signature? Does it do it only when you put on the brakes, and every time that you do? Is it as you're coming to a complete stop, or just slowing down? Have you done plugs and wires recently? Have you change the O2 sensor since you had the code? Checked for vacuum leaks?