![]() The O2 sensors are not reporting the right readings from the exhaust.īank 2 is the side of your Odyssey’s engine with the second cylinder.The catalytic converter is losing efficiency and needs to be replaced.The exhaust is escaping before it is measured.When the readings from each O2 sensor get close, the software in your Odyssey’s PCM believes that the catalytic converter is no longer doing its job. These readings shouldn’t match since your Odyssey’s catalytic converter is scrubbing the pollutants from the exhaust. When the readings from the upstream and downstream oxygen sensors show similar readings (not enough pollutants expelled from the exhaust), your van will throw the service engine soon light (P0430). Efficiency Below Threshold An upstream O2 sensor Oxygen sensors measure the gasses that enter and exit your Odyssey’s catalytic converter. ![]() A modern catalytic converter should pull over 95% of these pollutants out. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. Your Odyssey’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency Here’s the technical definition for your Honda Odyssey: P0430 is generic (has the same meaning for all vehicles made in 1996+) OBDII trouble code. O2 sensor replacement is easy, but the catalytic converter can be a challenge ![]() ![]() P0430: Catalyst System Efficiency – Below Threshold (Bank 2) P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. It covers the P0430 code’s meaning, symptoms, causes, and possible solutions. WARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm.This page is meant to help you troubleshoot the Honda Odyssey P0430 trouble code. Location : Firewall Side Emissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be used in vehicles originally purchased in CA, CO, NY or ME) Restricted States : California|Colorado|New York|Maine Components : (1) Firewall Side Catalytic Converter, (1) Before Catalytic Converter Oxygen Sensor Type : Catalytic Converter Product Fit : Direct Fit Recommended Use : OE Replacement Quantity Sold : Kit EPA : N/TB6000/501-402 Gasket Included : Without Gasket Oxygen Sensor Ports : Factory OE Ports Oxygen Sensor Port Location : Factory OE Locations Warranty : 5-year or 50,000-mile Evan Fischer limited warranty Returns Policy : 60-Day Return Policy Prop 65 Warning : For more information go to Interchange Part Number : 40656, 18157, 25024346, 2344209, 13071 Series : Direct Replacement Series Tube Material : Aluminized Steel WARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. Location : Radiator Side Emissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be used in vehicles originally purchased in CA, CO, NY or ME) Restricted States : California|Colorado|New York|Maine Components : (1) Radiator Side Catalytic Converter, (1) After Catalytic Converter Oxygen Sensor Type : Catalytic Converter Product Fit : Direct Fit Recommended Use : OE Replacement Quantity Sold : Kit EPA : N/TB6000/501-402 Gasket Included : With Gasket Oxygen Sensor Ports : Factory OE Ports Oxygen Sensor Port Location : Factory OE Locations Warranty : 5-year or 50,000-mile Evan Fischer limited warranty Returns Policy : 60-Day Return Policy Prop 65 Warning :
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