Corolla 9th Gen/1st Gen Matrix (2003-2008)
Hello, I have a 2006 Toyota Corolla S 1.8L that is throwing up 2 codes that I need to fix for smog.
They are p0420 and p0741.
I have already replaced upstream o2 sensor, intake manifold gasket, exhaust manifold gasket, and exhaust flange and still no success.
Can anything tell me about the data...