Catalytic Converter Codes - 285K

Recently started to get some catalytic converter codes, P0420/P0430 twice over past couple of weeks and then today P0420 alone. I've cleared them, but three times seems to be indicating something is happening. I have not replaced the Cat Converters nor the O2 sensors. Looking to see thoughts on how to approach based on age of Cats and Sensors. I am somewhat handy but not a professional.

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Thanks!

2006 Tacoma V6 w/ 285K

 

Check for leaks around your converters/o2 sensors first, but they may be worn out at that mileage
OEM replacements will last that long, but aftermarket ones won’t last nearly as long. Walker brand is “ok”. Don’t think you’ll get more than about 100k on any of the aftermarket ones

 

That kind of miles i wouldn't be surprised at all if it needs converters, of course make sure you have no exhaust leaks upstream or near the AFR and O2 sensors.

Pretty easy to check converter function by graphing AFR and O2 sensor data.

 

Thanks! I have a Joying head unit with ODB/Torque to it looks like I can easily check those.