Dtc p0420 toyota

Discussion in ' 1st Gen Tundras ' started by danmurphymnOct 25, Log in or Sign up. Toyota Tundra Forum.

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. This code has been on for months. Tried lacquer thinner, Cataclean, Lucas, etc - sometimes the light goes out for a day, but inevitably comes right back on. Do you think I should try changing the oxygen sensors first?

Dtc p0420 toyota

Drives: Yaris XP9 1. So, Since a while we are seeing the check engine light pop up sometimes on our Yaris 1. I saw this for the first time about three months ago. Had some issues with the rear muffler, but that one was replaced for a original one by the dealer. New muffler sits under the car for about a month now, but i saw the P again last week. However, what is the cause of this and how can i solve it more permanently? Is there someone who has dealt with this error before? Car runs fine otherwise, no issues. Mileage see signature icon is also fine. View User's Garage. Originally Posted by ThinkPad.

You put the sticker on the car somewhere underside of hood or perhaps in the door jamb. Show Ignored Content. This car barely slows down a hill.

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The P trouble code is a common issue Toyota owners face and can cause frustration and confusion. This code indicates a problem with the catalytic converter system, an essential component of your vehicle's exhaust system. This guide will explain the meaning of the P code and its causes. We will also provide various solutions to resolve the issue and ensure your Toyota runs smoothly. From understanding the symptoms of a faulty catalytic converter to diagnosing and fixing the problem, we've got you covered. So, let's get started and decode the P code in your Toyota.

Dtc p0420 toyota

Are you getting the dreaded P error code from your Toyota Corolla? This post discusses the reasons for the code, and the easiest way to fix this common problem. When you buy through links on our site, we may earn an affiliate commission — at no cost to you. Use an ODB2 check engine light reader to read the error codes that are causing your check engine light CEL to illuminate. Error codes that start with P, refer to a problem with the catalytic converter cat. The way the vehicle determines that the catalytic converter is working okay is by measuring the oxygen content of the exhaust both upstream and downstream of the catalytic converter. If the cat is working, the 2 readings should be different.

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Originally Posted by kiimboy. Are there any other ideas on how to diagnose this code? Bank 1 sensor 1 or sensor 2? You are currently viewing as a guest! Meaning cat is bad. I know it can be a knucklebuster, but If yes, it seems too spendy, I guess I'd swap the upstream sensors and see if the code follows, just to rule them out. Drives: yaris 3 door hatch Join Date: Jun Mine was perfectly intact and clean, but DEAD. I don't have a fancy scantool, just a plug in and Torque app. Ask Cancel. Can someone help me with the process to diagnose whether this is an O2 sensor or a cat? Good luck. But if you're taking them off anyway, and gonna potentially bust knuckles

This page is meant to help you troubleshoot the Toyota Camry P trouble code.

As others have said, swap your drivers and passengers side downstream O2 sensors. It flies right along without any big production or complaining on behalf of the powertrain. Send a private message to kiimboy. I don't know what spark plugs were used the but the guy I bought the truck from did things right. Its the post cat one that is triggering the code. On my truck, that driver's O2 sensor before the cat somehow had all of it's wires pulled out. Hope it helps. You put the sticker on the car somewhere underside of hood or perhaps in the door jamb. Send a private message to ex-x-fire. How do i check my air fuel ratio? Can someone help me with the process to diagnose whether this is an O2 sensor or a cat? Monitoring my downstream sensor, I now see steady voltages. I've had a recurring P code. Tundra2 , Oct 25,