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P0430 catalyst system low efficiency bank 2 of Technology
The exact definition for the P0430 code is “Catalyst System Efficiency Below Threshold Bank 2”. This practically means that the catalytic converter on bank 2 …Dec 23, 2018 · P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your TLX’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of these pollutants out.Diagnostic trouble code(DTC) P0422 stands for "Catalyst 2 Efficiency Below Threshold (Bank 1).". It indicates that the emissions efficiency of Bank 1 catalytic converters are below the minimum allowable limit. This threshold is monitored by the catalyst monitor oxygen sensor, which is located near the catalytic converter's outlet.To diagnose the P0430 2001 Toyota Highlander code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.How to REPLACE THE CAT CONVERTER here: https://www.youtube.com/watch?v=_7kWpJBQhBs&list=UUSIdv7pEKV2jxJvI6YZB21A&index=33Check engine light on P0430 catalyti...P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your TLX’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of these pollutants out.Tech Notes. As the code description implies the P0430 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (it is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases, the catalytic convert needs to …P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your MKZ’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of …Diagnostic trouble code(DTC) P0422 stands for "Catalyst 2 Efficiency Below Threshold (Bank 1).". It indicates that the emissions efficiency of Bank 1 catalytic converters are below the minimum allowable limit. This threshold is monitored by the catalyst monitor oxygen sensor, which is located near the catalytic converter's outlet.Dec 23, 2018 · P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your TLX’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of these pollutants out.P0430 is generic (has the same meaning for all vehicles made in 1996+) OBDII trouble code. Here's the technical definition for your Chevy Tahoe: P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your Tahoe's exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses.P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your Suburban’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of these pollutants out.September 1, 2010. #1. Hi folks. 05 4 door explorer 4.0 liter and its being rotten. I got a code and went to Autobone...yea autobone and it came back p0430 cat. effic. low Bank 2. Now i just replaced a rocker arm in this thing a week ago it had a pressed pin in the arm that was actually coming out of it thank god it didnt fall out all the way ...Ford F150 P0420 Code Symptoms. The P0420 code in a Ford F150 will often be thrown if one of your truck’s oxygen sensors is not functioning correctly. There are rarely drivability issues associated with P0420. For most people, the first sign that anything is wrong is the service engine soon light coming on.P0420: Catalyst System Efficiency Below Threshold (Bank 1) Catalyst System Efficiency. Your Equinox's exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency is the percentage of these chemicals removed from the exhaust system. Oxygen sensors measure these pollutants. Efficiency Below ThresholdSummary. P0420 stands for “Catalyst System Efficiency Below Threshold (Bank 1).”. This trouble code is triggered when the on-board computer detects that the bank 1 of the catalytic converter is underperforming. A faulty catalytic converter (usually due to overheating and contamination) is the most common reason why this code is logged.To diagnose the P0430 2006 Nissan Pathfinder code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.May 30, 2020 · Code P0430 Nissan Description. The Engine Control Module ( ECM) monitors the switching frequency ratio of heated oxygen sensors 1 (front O2 sensor) and heated oxygen sensors 2 (rear O2 sensor). A three way catalyst converter (Manifold) with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2.2005 jeep libert3.7 p0430 cat efficiency below threshold bank 2 p2098 downstream fuel trim lean bank 2 changed bank 2 cat as well as bank 2 sensor 2, code still comes back around 50 mi.. … read moreDec 23, 2018 · P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your TLX’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of these pollutants out.You are close in your understanding of what the P0430 code means. In reality it means the bank 2 (front) catalytic converter isn't cleaning up the exhaust as much as the ECM wants it to. The converter isn't getting any more (or less) fouled now than what it was. In the majority of cases I have observed the converter is flowing just fine and isn ...P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your Journey’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of these pollutants out.P0430 - Catalyst System Efficiency Below Threshold (Bank 2) ... You need to troubleshoot the cause of the P0430, or have a competent mechanic do it. There are a lot of things that could cause it that don't require you to buy any parts (or at least buy parts that are cheaper than a cat) - vacuum leak, dirty/bad MAF sensor, bad ground, stuck fuel ...Code P0420 Nissan Description. The Engine Control Module ( ECM) monitors the switching frequency ratio of heated oxygen sensors 1 (front O2 sensor) and heated oxygen sensors 2 (rear O2 sensor). A three way catalyst converter (Manifold) with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2.How to repair P0430 2016 Chevrolet Silverado code Catalyst System Low Efficiency Bank 2. ... If the P0430 code is combined with other codes, try fixing the other codes first. ⚠ Check if your Chevrolet have Safety Recalls. Description. A 3-way catalyst controls emissions of hydrocarbons, Carbon Monoxide (CO), and Nitrogen Oxide (NOx). The ...2015 Silverado 5.3l P0420 Catalyst system efficiency below threshhold bank 1 trouble shooting? ... Catalyst Test Bank 2 catalyst DFCO exit test 1.117, min .350 ... A new y-pipe or converters isn't cheap so check/try things first. With that low of mileage it would be odd to be a converter problem unless there was something running through the ...The P0420 code indicates that your vehicle's powertrain control module (PCM) monitors the poor efficiency of the catalytic converter at Bank 1. This code may also be triggered due to a bad catalyst or a false alarm caused by a faulty oxygen sensor at Bank 1. Basically, Bank 1 and Bank 2 are the two sides of the engine.P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your Expedition's exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of these pollutants out.To diagnose the P0430 2008 Toyota Camry code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.Oct 29, 2021 · P0430 is a diagnostic trouble code (DTC) for “Catalyst System Efficiency Below Threshold (Bank 2).”. It warns about a problem with the catalytic converter mounted near engine bank 2 (the side of the engine opposite the number one cylinder). A failing catalytic converterbreaks down less pollutants in the exhaust, resulting in lower oxygen ...To diagnose the P0430 2005 Nissan Murano code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your Acadia’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of these pollutants out.How to Fix Engine Code P0420 and P0430 Catalyst System Efficiency Below Threshold Bank 1 or 2 in any Ford Car. A easy and cheap way to Fix code P0420 and P04...P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your Envoy's exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of these pollutants out.P0430 is generic (has the same meaning for all vehicles made in 1996+) OBDII trouble code. Here's the technical definition for your Honda Accord: P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your Accord's exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses.The Intake Air Temperature (IAT) parameter is between -20 and +85°C (-4 and +185°F). The battery voltage is more than 11 volts. Idle Conditions The vehicle speed is less than 3.2 km/h (2 mph). For automatic transmissions, the transmission is in Reverse, Drive, or Low. The Throttle Position (TP) parameter is 2 percent or less.Sep 14, 2018 · P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your Sierra’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of these pollutants out.To diagnose the P0430 2015 GMC Sierra code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour. And because it refers to Bank 2, the P0430 trouble codeP0430 means "Catalyst System Efficiency Below
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Bank 1 is passenger side, Bank 2 is driver. P0430 is a Bank 2, 3 way catalyst DTC code: Three way catalyst function (Bank2) P0430 80H 01H O2 storage index P0430 82H 01H Switching time lag engine exhaust index value DTC No.: P0420 (Bank 1) P0430 (Bank 2) Trouble diagnosis name: Catalyst system efficiency below threshold Possible cause:P0430 Powertrain "Catalyst System Efficiency Below Threshold Bank 2". Few days ago I found check engine light on the truck and upon scanning with obd2 I found code is P0430. Before rushing to catalytic converter I inspect the truck and found cracked intake duct which is replaced and I also cleaned the throttle body as it was a bit dirty.with the engine at 1200-1700 rpm and MAP vacuum between 15.0 and 21.0 inches of mercury (Hg). ² Set Condition: As catalyst efficiency deteriorates, the switch rate of the downstream O2 sensor approaches that of the. upstream O2 sensor. If at any point during the test the switch ratio reaches a predetermined value a counter.P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your STS’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of these pollutants out.September 1, 2010. #1. Hi folks. 05 4 door explorer 4.0 liter and its being rotten. I got a code and went to Autobone...yea autobone and it came back p0430 cat. effic. low Bank 2. Now i just replaced a rocker arm in this thing a week ago it had a pressed pin in the arm that was actually coming out of it thank god it didnt fall out all the way ...Jun 20, 2022 · Code Tech Notes. As the code description implies the P0430 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (it is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases, the catalytic convert needs to ...P0430 Code: Catalyst System Efficiency Below Threshold (Bank 2) Discussion in '2nd Gen. Tacomas (2005-2015)' started by qnyla, Sep 13, 2015. Post Reply. ... Sure enough the readings were much more stable and behaved like the passenger side bank. Fuel trims looked good. Ran it like that for a month, light stayed off.Code Tech Notes. As the code description implies the P0430 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (it is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases, the catalytic convert needs to ...Possible causes of OBD code P0430 Lexus. A code P0430 Lexus may mean that one or more of the following has happened: The catalytic converter is no longer functioning properly An oxygen sensor is not reading (functioning) properly There is an exhaust leak.P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your Suburban’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of …To diagnose the P0430 2006 Infiniti G35 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.Answered in 3 minutes by: Chevy Mechanic: Chevy man. Chevy man, Chevy Technician. Category: Chevy. Satisfied Customers: 4,942. Experience: ASE Certified as an L1 Master Technician with extensive experience in Chevy products. Verified. This is rear cut and dry. You have to replace the Catalytic Converter on bank 2.This page is meant to help you troubleshoot the Pontiac Torrent P0430 trouble code. It covers the P0430 code's meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. Table of ContentsP0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your Envoy's exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of these pollutants out.P0430 definition: Catalyst system efficiency below threshold (Bank 2). Issue Severity: MODERATE– Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code …DTC P0420 Catalyst System Low Efficiency Bank 1. DTC P0430 Catalyst System Low Efficiency Bank 2. This message concerns 2004-2006 Cadillac CTS, SRX, STS, XLR and Buick LaCrosse and Rendezvous with LY7 3.6L and LP1 2.8L V6 or LH2 4.6L V8 engines. When diagnosing concerns with oxygen sensors, the following points …Code P0430 2016 GMC Sierra Description. A 3-way catalyst controls emissions of hydrocarbons, Carbon Monoxide (CO), and Nitrogen Oxide (NOx). The catalyst within the converter promotes a chemical reaction, which oxidizes the hydrocarbons and the CO that are present in the exhaust gas.Code Tech Notes. As the code description implies the P0430 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (it is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases, the catalytic convert needs to ...Tech Notes. As the code description implies the P0430 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (it is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases, the catalytic convert needs to …I had a CEL, using my BlueDriver Bluetooth OBDII Scanner, I pulled Code P0420 - "Catalyst System Efficiency Below Threshold Bank 1" After reading a bunch of posts on this forum, the first suggestion seems to be to replace all 4 oxygen sensors even though the problem is likely the Catalytic Converter. My questions are below: 1.P0430 is a diagnostic trouble code (DTC) for "Catalyst System Efficiency Below Threshold (Bank 2)". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic ...P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your Pilot's exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of these pollutants out.P0430: Catalyst System Efficiency - Below How to fix a Dodge with a P0420 Code, "C
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It is used by the engine control system to run a chain of chemical reactions that turn carbon monoxide emissions into water vapor and carbon dioxide which are harmless to the environment. The process is monitored using Bank 2 which is located inside the exhaust system of your vehicle. If the P0430 code appears, it means that the oxygen sensor ...As oxygen storage capacity decreases, the heated oxygen sensor 2 switching frequency will increase. When the frequency ratio of heated oxygen sensors 1 and 2 approaches a specified limit value, the three way catalyst malfunction is diagnosed. P0430 Mercedes-Benz Code - Catalyst System Efficiency Below Threshold Bank 2Aug 20, 2020 · Tech Notes. As the code description implies the P0430 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). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert needs to be ...The P0430 code is a common problem that can occur in any vehicle. If this happens, then you need to Once the catalytic converter's performance falls below the ECU's limit, the P0430 code is set. ... What is catalyst system efficiency below threshold bank 1 "Catalyst System Efficiency Below Threshold (Bank 1)" is a diagnostic problem code ...P0430 is a diagnostic trouble code (DTC) for "Catalyst System Efficiency Below Threshold (Bank 2).". It warns about a problem with the catalytic converter mounted near engine bank 2 (the side of the engine opposite the number one cylinder). A failing catalytic converterbreaks down less pollutants in the exhaust, resulting in lower oxygen ...P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your Pathfinder’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of …Code P0430 Dodge Description. The Engine Control Module monitors the switching frequency ratio of heated oxygen sensors 1 (front O2 sensor) and heated oxygen sensors 2 (rear O2 sensor).A three way catalyst converter (Manifold) with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2.Toyota Rav4 P0420 Code Symptoms. The P0420 code in a Toyota Rav4 will often be thrown if one of your vehicle's oxygen sensors is not functioning correctly. There are rarely drivability issues associated with P0420. For most people, the first sign that anything is wrong is the service engine soon light coming on.DTC P0430 Catalyst System Low Efficiency Bank 2 This message concerns 2004-2006 Cadillac CTS, SRX, STS, XLR and Buick LaCrosse and Rendezvous with LY7 3.6L and LP1 2.8L V6 or LH2 4.6L V8 engines. When diagnosing concerns with oxygen sensors, the following points should be followed: 1. Malfunctioning oxygen sensors will set a sensor related ...Despite this I would still get the P0430 code about 20 miles after clearing the code manually with a code reader. So I decided to give a bottle of catalytic converter cleaner a try. I purchased a bottle of Solder-It (CAT-1) Catalytic Converter Cleaner from Amazon for $10.As oxygen storage capacity decreases, the heated oxygen sensor 2 switching frequency will increase. When the frequency ratio of heated oxygen sensors 1 and 2 approaches a specified limit value, the three way catalyst malfunction is diagnosed. P0430 2010 Nissan Altima Sedan Code - Catalyst System Efficiency Below Threshold Bank 2Code P0430 Hummer Tech Notes. As the code description implies the P0430 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). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases, the catalytic convert ...What does this mean? Possible Causes. NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other …I do not want to do the 'trick' of tricking the system with an 02 spacer. P0430 Nissan - Catalyst System Efficiency Below Threshold Bank 2. Possible causes. - Three way catalyst converter Bank 2. - Exhaust tube. - Intake air leaks. - Fuel injectors may be faulty. - Fuel injector leaks. - Spark plugs may be faulty.How to repair P0430 2016 Chevrolet Silverado code Catalyst System Low Efficiency Bank 2. ... If the P0430 code is combined with other codes, try fixing the other codes first. ⚠ Check if your Chevrolet have Safety Recalls. Description. A 3-way catalyst controls emissions of hydrocarbons, Carbon Monoxide (CO), and Nitrogen Oxide (NOx). The ...And because it refers to Bank 2, the P0430 trouble code is specific to V6 and V8 engines, as only these have two banks. This, in most cases, means there are two catalytic converters, one for each cylinder bank. Consequently, deciding which of them is Bank 2 may sometimes be difficult. Generally speaking, Bank 2 is the one that holds the number ...This page is meant to help you troubleshoot the Pontiac Torrent P0430 trouble code. It covers the P0430 code's meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. Table of ContentsCode Tech Notes. 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 (it is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases, the catalytic convert needs to ...This page is meant to help you troubleshoot the Saturn Sky P0430 trouble code. It covers the P0430 code's meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. Table of ContentsEven slight variations in the air/fuel mixture will cause the converter temperature to rise significantly. The “Catalytic Converter Efficiency” Diagnostic Trouble Codes (DTCs) P0420 and P0430, are among the top 10 DTCs technicians face. And while the description might imply a failed converter, odds are the ultimate fault lies somewhere else.P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your Explorer’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. Catalyst system efficiency measures how many chemicals are removed from the exhaust system. A modern catalytic converter should pull over 95% of …P0430 - Catalyst System Efficiency Below Threshold (Bank 2) you need a scan tool to monitor the upstream and downstream 02 sensors on bank 2 more than likely its the converter. also check for exhaust leaks before converter . Most times the problem is the Downstream O2 sensor is defective. Jun 02, 2010 • 1996 Ford Taurus.P0430 TOYOTA - Catalyst System Efficiency Below Threshold Bank 2. Description. The Engine Control Module (ECM) monitors the switching frequency ratio of heated oxygen sensors 1 (front O2 sensor) and heated oxygen sensors 2 (rear O2 sensor). A three way catalyst converter (Manifold) with high oxygen storage capacity will indicate a low switching ... DTC P0430. Catalyst System Low Efficiency Bank 2