Honda Check Engine Light Code P0420

There aren t usually any drivability issues associated with p0420.

Honda check engine light code p0420. P0442 honda cr v. Oxygen sensor the p0420 codes is thrown when the oxygen sensors on both sides of the exhaust have very similar readings. Typically the code will be triggered by the upstream oxygen sensor before the converter. There are many things that can cause the p0420 trouble code in your cr v.

The p0420 code in a honda accord will often be thrown one of your oxygen sensors are not functioning properly. There aren t usually any drivability issues associated with p0420. Here are the most common ones. Check engine light is on.

As the code description implies the p0420 code means that the vehicle s control module has detected that the three way catalytic converter is not working properly is not as efficient as the factory is expecting. The p0420 code in a honda odyssey will often be thrown one of your oxygen sensors are not functioning properly. When the oxygen sensor is bad it can cause a false reading and trigger the code. Typically the code will be triggered by the upstream oxygen sensor before the converter.

A three way catalyst converter manifold with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. Lack of power from the engine. Rotten egg or sulfur smell. Code p0420 indicates that the catalytic converter is not functioning efficiently therefore increasing the output of harmful pollutants by your honda.