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Car repair question
Cary Offline
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#9
04-18-2022, 12:33 PM
P0420 is a catalyst efficiency code, not a catalytic converter code.

It's usually not the catalytic converter.

It could be the air intake tube. It could be poorly performing O2 sensors. It could be the wiring harness. It could be the computer.

If you have cracks in the tube, change that first - it's inexpensive, and easy.
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Messages In This Thread
Car repair question - by BernDog - 04-18-2022, 02:41 AM
Re: Car repair question - by SDGuy - 04-18-2022, 02:51 AM
Re: Car repair question - by BernDog - 04-18-2022, 02:54 AM
Re: Car repair question - by Filliam H. Muffman - 04-18-2022, 04:41 AM
Re: Car repair question - by mrbigstuff - 04-18-2022, 04:53 AM
Re: Car repair question - by Speedy - 04-18-2022, 05:02 AM
Re: Car repair question - by BernDog - 04-18-2022, 05:10 AM
Re: Car repair question - by Thrift Store Scott - 04-18-2022, 05:53 AM
Re: Car repair question - by Cary - 04-18-2022, 12:33 PM
Re: Car repair question - by gadje - 04-18-2022, 01:14 PM
Re: Car repair question - by BernDog - 04-18-2022, 03:27 PM
Re: Car repair question - by davester - 04-18-2022, 03:36 PM
Re: Car repair question - by BernDog - 04-18-2022, 04:07 PM
Re: Car repair question - by C(-)ris - 04-19-2022, 12:59 AM

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