thats good, went a sensor go bad normally the computer detect the problem and show a code, sometimes not necesary means that the problem its the sensor inself but its a good star, but in ur case i would check first for a vaccum leak, any hose broke or crack then spray some carb cleaned around the gasket for the throtte body and the many and many and head.....then check o2 w/voltmeter its ok, then iacv, then timming belt and timming setup, then valve adjustment