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
Asked by Visitor for the 2003 Toyota Corolla
7 answersDecember 27, 2011
1 answerMarch 27, 2010
3 answersJuly 18, 2009
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