Why does my Honda Accord have a P0420 code?
Then, the Check Engine Light is triggered, and you get a P0420 engine code. Many owners have reported P0420 for the following makes: Honda (especially on a Honda Accord), Chevrolet, Nissan, Ford, and Toyota. A faulty catalytic converter is the most frequent cause of a P0420 code. Common issues that can cause the P0420 code include:
What is the OBD II fault code P0420?
OBD II fault code P420 is a generic code that is defined as “Catalyst System Efficiency below Threshold Bank 1”, and is set when the PCM (Powertrain Control Module) detects that the catalytic converter on bank 1 is operating below a minimum allowable efficiency threshold.
When to use the P0420 warning light?
In most cases, the PCM will set code P0420 and illuminate warning light when it calculates an efficiency value of between 75%, and 70%, with 70% representing the lowest allowable efficiency threshold on most applications. So why does code P0420 affect some Nissan applications more than others?
What is the trouble code on a Honda Accord?
One of the most common trouble codes with all Honda vehicles is the P0420. This code number references a number that is given to you when you plug your Honda Accord into a OBDII scanner. It doesn’t matter which model you have, this OBDII code has the same meaning for all of them. P0420 is a OBDII trouble code.
What’s the problem with my Honda Accord P0420?
It covers Honda Accord P0420 meaning, symptoms, causes, and possible solutions. In the Accord, OBDII P0420 is often caused by a bad oxygen sensor, but there can be other causes as well. One of the most common trouble codes with all Honda vehicles is the P0420.
What does P0420 mean on a check engine light?
Welcome to P0420.com, the place dedicated to that DTC (diagnostic trouble code) P0420. The P0420 code is a very popular one and that’s why there’s a site dedicated to that specific trouble code. If your car’s check engine light is on, get that code read in case it’s a P0420. A P0420 code is a trouble code on OBD-II equipped vehicles.
One of the most common trouble codes with all Honda vehicles is the P0420. This code number references a number that is given to you when you plug your Honda Accord into a OBDII scanner. It doesn’t matter which model you have, this OBDII code has the same meaning for all of them. P0420 is a OBDII trouble code.
Why is my Honda Accord not passing emissions?
The software in your vehicle believes that the catalytic converter is no longer doing its job. If your vehicle has the P0420 code, it won’t pass emissions so please be aware of that. The P0420 code in a Honda Accord will often be thrown one of your oxygen sensors are not functioning properly.