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5
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3answers
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Check Engine code P0420 Catalyst efficiency below threshold bank 1

After months of normal driving with no problems, my 2003 Honda Civic EX check engine light came on during a long trip. Got it scanned and it's P0420: Catalyst efficiency below threshold bank 1. They ...
3
votes
1answer
2k views

How do I repair the O2 sensor in a 2001 Toyota Camry?

I have a 2001 Toyota Camry and the O2 sensor near the front of the car is bad (this is confirmed by the code that the computer has returned). Though I'm not particularly knowledgable about cars ...