[Help] 2003 Jetta with a code p0420 and I'm running out of fixes.

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NotTheZombies is in help

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I've been slowly working on this code for about the past three years but it keeps coming in. I had the catalytic converter replaced 3 years ago, had the MAF sensor replaced and the fuel injection system cleaned about 2 years ago, last year I changed the spark plugs, coil pack, ignition wires and both O2 sensors and was told that the replacement catalytic converter was too small. A few days ago I had the catalytic converter replaced again and a hole in the exhaust system patched up.

Any ideas as to what to look at next? Thank you.

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NotTheZombies

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Posted: 10 years ago
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