Unfortunately, FIXD is not guaranteed to be compatible with your vehicle.
So you’ve discovered you’ve got a P0420 code. That could mean anything from a faulty oxygen sensor to a bad catalytic converter. We do NOT recommend continuing to drive with this code, unless you like the idea of replacing your engine.
If you can pinpoint the cause of your P0420, you will know exactly what you need to fix without wasting money on replacement parts you don’t need.
Everything you need to diagnose and fix P0420 with confidence is at your fingertips inside our easy-to-follow 15-page guide! Whether you’re mechanically inclined or know nothing about cars, this guide was created by one of our car experts, Jeffrey Ross (a former ASE Certified mechanic and lifelong gearhead), to help you get the job done – without all the headaches and guesswork.
Your risk-free P0420 DIY Repair Pack gives you everything you need to diagnose and understand how to fix your P0420 for $4.99 ($150 value). If it doesn’t save you money, return it no questions asked. Your guide will be emailed to you after you complete checkout
You’ll get our 15 page step by step guide to fixing P0420 with images, diagrams, and videos. You’ll also get one FIXD Sensor (FREE Shipping) and a 14-day risk-free trial of FIXD Premium, which includes unlimited access to our unbiased mechanic hotline and all of these other great features you’ll love:
Access our data network to see the most likely fix for your check engine light code and how much it should cost so you don't get ripped off.
Whether you want someone to walk you through DIY repairs, help you schedule service, or just explain what's going on with your car in simple terms, our FIXD Mechanics have you covered. Call Monday-Friday, 8am to 8pm EST, for trusted advice you can count on.
Buying used? Use your FIXD Sensor + Premium to scan any car for hidden issues and view the complete history of any vehicle you're interested in, including its fair market value, previous accidents, mileage, & more.
With Issue Forecast, you can find out what issues your vehicle is most likely to encounter in the future so that you can plan ahead and take steps to avoid them with proper maintenance.
FIXD Premium includes our Emissions Precheck feature so that you can test emissions at home and make sure you'll pass before wasting time and money at a testing facility.
As part of your risk-free, no-cost 14-day trial, you'll also receive a FIXD Sensor. This car scan tool connects to your vehicle's OBD2 port to read and decode check engine lights. The following features are included free with your FIXD Sensor:
Plug in the sensor
FIXD plugs into your car’s OBD2 port (every car made since 1996 has one), usually located under the steering wheel.
Start your engine
Download the FIXD app and start your engine. The FIXD Sensor easily connects to your smartphone via Bluetooth.
Tap to scan!
Hit the “scan” button on your phone to instantly decode your check engine light and access all Premium features!
FIXD is compatible with all gas-powered vehicles manufactured in 1996 or newer, and all diesel engines 2008 or newer.
You might think we’re crazy to give away the FIXD Sensor and our Premium app subscription FREE for 14 days with the P0420 Guide, and… maybe we are. But that’s how confident we are that you’re going to love your new “pocket mechanic.” And if you do, that’s great! You get to keep the sensor for free and you’ll be charged $69.99, or only $5.83/month, for a full YEAR of Premium benefits ($120 value).
We know you’ll love this, but we get it, saving money and simplifying car care simply isn’t for everyone. So if you take FIXD Premium for a risk-free spin today and don’t end up loving it, no hard feelings – and no charge! Simply send the FIXD Sensor back after your 14-day trial and you won’t be charged a penny. There’s literally nothing to lose, so let’s get started!
Honestly? It’s the best deal we’ve ever run in our 8-year history and we’re not sure when we’ll take it down. With your P0420 Guide, you get to take the FIXD Sensor AND FIXD Premium for a risk-free test drive for the next 14 days for $0 out of pocket. You don’t even have to pay shipping on the sensor we’re going to send you as part of your free trial! There’s literally nothing to lose, so what are you waiting for? Let us help you simplify car care.
Your 100% risk-free trial costs you nothing and includes 1 FIXD Sensor and a 14-day trial to FIXD Premium. You’ll get to take all the standard features of our free app for a test drive, plus the following Premium features!
After your risk-free 14-day trial, you can keep the sensor (normally $59) at no charge and keep on crushing car care with easy check engine diagnostics, access to our FIXD Mechanics, repair cost estimates, and more. We’ll bill you for the yearly subscription at $69.99 so you get uninterrupted access to FIXD + FIXD Premium.
Let’s not get ahead of ourselves, but we’re confident you’re going to love your new FIXD Sensor and Premium features. That’s why we’re giving away free test drives! That being said, we understand if it’s not right for you. So, if after the 14 days you don’t wish to continue, all you have to do is mail back your FIXD Sensor to headquarters here in Atlanta and you won’t be charged a dime.