P0420 toyota 4runner

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Remember Me? Site Navigation. Member's Picture Albums. I know there have been countless threads on this error code, but since I got my 4runner down to Florida it has been popping codes. I have had it cleared a few times, no big deal. Here's the strange part though. The other day I was playing around at one of the state parks, going a bit fast on the dirt roads with my 4wd on, and the strangest thing happened.

P0420 toyota 4runner

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. I have had other error codes. Car: 4Runner V6 Took car to pep boys. They said bad catalytic converter. No error codes for miles. Then car ran funny. So I had a tune up and I had pep boys replace the spark plugs. That didn't fix it.

Replaced that with a new hose. Last edited by TheDurk; at PM.

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Getting code P bank 1 on Cali 4Runner Limited. Is it oxygen sensor or catelytic converter?

Remember Me? Site Navigation. Member's Picture Albums. Check Engine Light intermittently comes on and off, for almost a year. Done the following: 1. Replaced Bank 1 Exhaust Catalytic converter manifold. Ran cataclean in fuel system. Same results, but Check Engline Light stays off longer since doing the above. Now its Back on again.

P0420 toyota 4runner

Remember Me? Site Navigation. Member's Picture Albums. I know there have been countless threads on this error code, but since I got my 4runner down to Florida it has been popping codes. I have had it cleared a few times, no big deal.

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Well, it's been a week and the light came on--on my way to work. Do you have a rotten egg smell or a cat that is rattling? Posting Rules. I have all the repair records that indicate that the front cat was replaced at 62K miles in So I took off the PCV valve and it was broken. Originally Posted by threadlessclimber. Thanks for any advise Originally Posted by Robb Insert Quotes Quotes Post Reply. Quick Links: A code scanner? Try O2 sensors first. This was the 2nd time I took it to them to diagnose with the same issue. Mine comes on between after reset and a couple thousand miles.

This page is meant to help you troubleshoot the Toyota 4Runner P trouble code. A failing oxygen sensor or bad catalytic converter are the most common causes of P

Joined: Jun 11, Member: Messages: JavaScript is disabled. BB code is On. P is a CAT problem,when you have misfire codes P is multiple misfire,P is cylinder 1 and so on. Any help would be appreciated. Reason: forgot to mention the last part. All times are GMT Car: 4Runner V6 Took car to pep boys. And then yaw sensor code pops up. Well, it's been a week and the light came on--on my way to work. Driven the 4runner miles and no issues with oil burn or low oil. What all have you tried??? Ask a question Answers will be sent directly to your email. P Catalyst Code Bank1? Discussion in ' 3rd Gen 4Runners ' started by obx4runner , Dec 31,