1997 Geo Metro P0420 Code overview
This page collects available information about 1997 Geo Metro P0420 Code and organizes it in an easy-to-read reference format.
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I barely failed smog with only 50 over the Nox at 15mph. Then I bought an UltraGauge and it told me pending
Kind of a lame video. Misdiagnosed a sputtering low power issue as being result of a clogged EGR valve. EGR valve was dirty ...
After running the car with a coolant issue, completely out of coolant, and replacing the head gasket after it failed, I'm trying to track ...
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