that means the computer lost communications with the dash instruments on it so that will make it shut down,thing is though there's several things that will cause that too happen,a bad connection on the dash wiring harness will cause that to happen,it should have died on you also so if it remained running then the pcm is good ,you need to check all the connections on the back of the dash where they hook up at,most of the time it takes a dealer with a scan too to locate that problem,the fact that its still running indicates a bad connection on the dash unit,my car has done that once and i simply tapped on the dash real lighltly and it came back on and has never did it again,you might try that on yours also,i own two of those cars one r/t model and one s/e,good luck with it.