Check engine light comes on and code reads catalyst efficiency below threshold clear code and Check engine light comes back on after some time. What is the remedy to get threshold above catalyst efficiency to keep Check engine light off permanately.
Check Engine Light on 2003 Toyota Corolla
by Visitor in New Windsor, NY on September 10, 2010
ANSWER by devilscap4 on September 10, 2010
the catalytic converter will most likely need to be replaced, although, a faulty oxygen sensor can sometimes give false catalytic converter codes.
My check engine light went on recently and I began to notice that my car would jerk when accelerating from first to second gear. The jerk was less significant going from second to third gear(autom...
Check light just came on stays on but soesn't drive different. What is involved in servicing and about how expensive to fix. I bought extended warrenty with car 5 month ago.
how do I reset the check engine light or maintence required light?