dr_pepsi_B to Mechanic Advice@gearhead.townEnglish · 10 months ago

P0420 Code

3

1

P0420 Code

dr_pepsi_B to Mechanic Advice@gearhead.townEnglish · 10 months ago

3

I have a 2005 Toyota Corolla. Check engine light came on last year. I replaced catalytic converter last year, both O2 sensors last week and have added a catalytic cleaner recently and followed the directions to a tee. My check engine light is still on throwing that code. Any other suggestions what it might be?

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10 months ago
Okay… It’s got 263k miles on it but I’ve taken great care of it for years. Just not sure how much I’m willing to pay at this point to properly diagnose. Hopefully they wouldn’t charge me a fortune just to diagnose but they probably will. It runs mostly fine just notice gas mileage isn’t as great anymore.

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