What does the code p0420 in 1998 Honda accord mean?

P0420 is a diagnostic trouble code (DTC) for the Honda Accord. It indicates that there is a problem with the catalytic converter. The catalytic converter is a device that helps to reduce emissions from the engine. When the catalytic converter is not working properly, it can cause the car to fail an emissions test.

Here are some of the possible causes of code P0420:

* Faulty catalytic converter

* Oxygen sensor failure

* Exhaust leak

* Faulty engine control module (ECM)

If you are experiencing code P0420, it is important to have your car diagnosed by a qualified mechanic. They will be able to determine the cause of the code and recommend the appropriate repairs.