Have a specific code atm
Responses
Ron Z.
212 days ago
Hi! Welcome to JustAnswer. Thank you for contacting us for assistance with your vehicle. I'm Ron. I will be happy to assist you with your question. May I ask to whom I have the pleasure of speaking with today?
Customer
212 days ago
CarltonNo live call
Ron Z.
212 days ago
Hi Carlton. Nice to see you today! I'm sorry to hear you are having this problem. I know this can be frustrating. Carlton, does your Accord have the 4-cylinder or 6-cylinder engine?
Customer
212 days ago
4 cylinder
Ron Z.
212 days ago
Perfect. Thank-you, Carlton. Please give me one moment to type out some information for you. Sit tight one minute... I'll be right back!
Thanks for holding, Carlton.
Unfortunately, the P0420 is a fairly straight forward code, and a fairly common problem. This code points to a failing [Catalytic Converter](/topics-catalytic-converter-honda/). The Oxygen Sensors measure the amount of emissions in the [exhaust](/topics-exhaust/) going into, and then out of the converter. When they see that the converter is not "cleaning" the exhaust enough to meet specs, the Converter is deemed "below threshold" and the P0420 is set. Make sure there are no current cylinder misfires. Make sure there are no leaks in the exhaust system. Which, if there were, you should be able to hear. Sounding like a repeating "tick" or "puff" from the exhaust. Usually more predominate when the engine is cold. Make sure to include the exhaust manifold when checking for leaks/cracks. If these check ok, then most commonly, the Converter is "on it's way out" and will need replacement in the near future. Keep in mind, you will need a replacement converter that meets specs. Those "universal" or "discount" converters sold at some after market parts stores do not meet specs, and will not cure a P0420.
Customer
212 days ago
Ok
Ron Z.
212 days ago
Glad I could be of some help today, Carlton! I hope everything works out well for you!
Have a great day!
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