Replaced all O2 sensors but the code P0421 still shows. When we took it to a muffler shop they confirmed that the catalytic converter was going bad and checked with every other shop to see if they had the catalytic converter for the car. But, in the end they found one outside of the U.S and importing it would cost a lot because of the tariffs, I think they said it would have been around 2k in total so we ended up just leaving the problem as is and the muffler shop only charged $40.
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Replaced all O2 sensors but the code P0421 still shows. When we took it to a muffler shop they confirmed that the catalytic converter was going bad and checked with every other shop to see if they had the catalytic converter for the car. But, in the end they found one outside of the U.S and importing it would cost a lot because of the tariffs, I think they said it would have been around 2k in total so we ended up just leaving the problem as is and the muffler shop only charged $40.
- David V., Los Angeles, CA, US