2009 CHEVROLET MALIBU
10,017 MILES
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ANONYMOUS
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i failed emission test with code p0420 po300 andd
P0101 isit the catalytic converter or oxgen sensor? How much will i have to pay to get it repaired at a muffler shop..oh no misfire
Apr 11, 2013 at 1:07 AM
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ASEMASTER6371
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you need a cat. get a good quality cat not a cheap one. after it is repaired, it needs to be driven to see if the missfire goes away. the 101 is a mass air flow code but doesn not mean it needs to be replaced. have it checked first

Roy
Apr 11, 2013 at 1:19 AM
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RUSLADLC
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Which cat would this be referring to? There's one connected to the exhaust manifold itself on the 2.4l and then there is either another one before the muffler or a resonator...only saw sensors near the first one.
Aug 28, 2013 at 4:10 PM
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