Review on High-Performance Walker Exhaust Ultra EPA 16299 Direct Fit Catalytic Converter by Gregory Abercrombie
2004 Accord P0420 gone! Ready for inspection.
While this code (P0420) could also be from the oxygen sensor, troubleshoot the oxygen sensor using a live data code reader. I did that and found good readings on the O2 sensors and realized I have a bad cat, installation is fairly easy, slightly different than the OEM so you will need nuts and bolts compared to the OEM Cat which has built in bolts Has. You will also need 2 walker pads to do this. Less than an hour of work and no code, for more than a month. This code worked for about a year. 2004 Honda Accord EX 4 cylinder
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