P0430 code bank 2 location

This video shows how to address a P0430 (Catalytic Converter) error code which is an "Oxygen Sensor" component. The sensor costs about $50 in Amazon. The w...

P0430 Bank 2 is driver's side: Bank 2 is side of engine w/#2 cylinder, which is driver's side. Since I am getting only P0430 and not also P0420 (Bank 1 passenger side) I suspect a O2 sensor or air/fuel ratio sensor on the drivers side, not something that would be common to both sides such as dirty MAF sensor, fuel tank cap, fuel pump, fuel ...May 20, 2016 ... I am getting code P0430 on an '08 2.7L. Catalyst System Efficiency Below Threshold (Bank 2) Does anyone know if bank2 is the front or the rear?Mar 3, 2017 · So, I'm a bit confused. You say P0430 which is a catalyst below efficiency code on bank 2. Do you have another code for an O2 sensor? Bank 2 Sensor 1 (upstream) is an air flow ratio sensor (wideband O2.) It sounds like the spark plug tube seal is leaking oil into the spark plug tube. Bank 2. Bank 2 is the side of your Santa Fe’s engine with the second cylinder. Typically, the first cylinder is closer to the front of the engine. A quick Google search for your vehicle’s engine and model year can quickly confirm that. The bank 1 version of this code is P0420.The diagnostic trouble code (DTC) indicates a problem with the catalytic converter on the Bank 2 exhaust manifold. It means the catalytic converter is faulty and emits extreme environmental pollutants. The P0430 code is activated when the PCM senses a lower threshold performance from the catalytic converter.A code P0430 triggers your car’s engine light to alert you about a problem with the catalytic converter mounted near engine Bank 2. Code P0430 is often accompanied by engine misfires or oxygen sensor (O2 sensor) trouble codes. Since the P0430 engine code is a generic trouble code, it applies to most vehicles manufactured from 1996 onwards.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. ... (Bank 2) Symptoms: Check engine light: Common Causes: Bad catalytic converter, O2 sensors: Breakdown Risk? Rarely (it’s an emissions code) Repair Cost (Parts) $250 …

2. Replace the oxygen sensors: Faulty oxygen sensors can sometimes trigger the P0430 code. Consider replacing them if they are old or worn out. 3. Clean or replace the catalytic converter: Over time, the catalytic converter can become clogged or damaged, leading to the P0430 code. Try cleaning it first using a specialized cleaner, …A code P0430 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. Solutions First, inspect for exhaust leaks. Next step is to measure the voltage at the oxygen sensor on Bank 2.Sep 15, 2011 ... P0420 is for the right (passenger's side) primary cat. Here are the parts I ordered. You'll have to look up which side is which, as I don't ...P0430. had the Check Engine light on my 05 Grand Cherokee with the 4.7 V8 with 80k miles. Local trusted mechanic says all four O2 sensors are working and both catalysts generate at least 100 degrees via infrared thermometer. Tried to clean thinks up with SeaFoam and ChemTool products but the code would come back.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 Dodge Code - Catalyst Efficiency Bank 2. Need More Information on the …

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 Jeep Code - Catalyst Efficiency Bank 2P0430, “Catalyst System Efficiency Below Threshold (Bank 2)” means the issue triggering it is happening in Bank 2 (where your vehicle’s cylinder number 2 is located). According to our mechanic, “Generally, this code means that you need a new catalytic converter.”. When your car’s catalytic converter is working correctly, it breaks ... A code P0430 triggers your car’s engine light to alert you about a problem with the catalytic converter mounted near engine Bank 2. Code P0430 is often accompanied by engine misfires or oxygen sensor (O2 sensor) trouble codes. Since the P0430 engine code is a generic trouble code, it applies to most vehicles manufactured from 1996 onwards. Bank 2 is the passenger's side. TS should be able to specify which of the two B2 sensors has faulted. Sensor 1 = front, Sensor 2 = rear. Amazon ...=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code P0430 Saving Repair Parts...Bank 2. Bank 2 is the side of your Colorado’s engine with the second cylinder. Typically, the first cylinder is closer to the front of the engine. A quick Google search for your truck’s engine and model year can quickly confirm that. The bank 1 version of this code is P0420.

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80K views 10 months ago. How to fix a P0430 engine code: Catalyst System Efficiency Below Threshold Bank 2 How To Test Oxygen Sensor Heater Element Video: • How To Test Oxygen Sensor Heated...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. ... (Bank 2) Symptoms: Check engine light: Common Causes: Bad catalytic converter, O2 sensors: Breakdown Risk? Rarely (it’s an emissions code) Repair Cost (Parts) $250 …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. ... (Bank 2) Catalyst System Efficiency. Your Expedition’s exhaust contains hydrocarbons, carbon …To diagnose the P0430 2015 Chevrolet Silverado 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.

The P0430 code is a diagnostic trouble code (DTC) that may appear on the vehicle’s onboard diagnostic (OBD-II) system. It specifically relates to the catalyst system’s efficiency, specifically in Bank 2 of the engine. Bank 2 typically refers to the side of the engine that does not contain the number one cylinder.P0430 Code. I have a 2018 F-150 STX and am the original owner. It has 34K miles and the check engine light came on yesterday. I checked and the code is P0430. A couple of months ago, my mileage dropped off about 1~2 mpg. Last month driving at speed occasionally the engine seems to slightly hesitate a few times them return to normal driving.What is the Cost to Diagnose the Code? Labor: 1.0. To diagnose the P0430 Dodge 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.05 Tundra SR5 (+295k AND COUNTING), 2006 F350 King Ranch 6.0L. Some stuff. Not a lot, just some. Start with the simple things (and cheaper) first. Clean the MAF with MAF cleaner and look for leaks in the exhaust manifold/system. You may have to clear the code and see if it will come back.Nuke. 87 posts · Joined 2017. #6 · Nov 13, 2017. For the typical V8, yes. But for the 3.5L, and most american V6's AFAIK, it will be the passenger side. Number 1 in any V-type engine is supposed to be the most forward of the cylinders (with front being closest to radiator and back being closest to firewall). I don't know why it is, but for ...As more and more people become aware of the potential drawbacks of using gasoline with ethanol, the demand for ethanol-free gas has been on the rise. Ethanol-free gas offers severa...So, I took the vehicle to several places, all of which ran an OBD II scan, which came back with a P0430 code. According to a poster here, this code means "TW Catalyst SYS-B2" Here is what each place said: 1. Advanced Auto - the Bank 2 oxygen sensor is bad. $100.44 for part. 2. Monroe Muffler - the Bank 2 Cat is bad. $1,015 …P0430 OBDII Code Defined. P0430 is generic (has the same meaning for all vehicles made in 1996+) OBDII trouble code. Here’s the technical definition for your Chrysler 200: P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your 200’s exhaust contains hydrocarbons, carbon monoxide, and other …P0430. had the Check Engine light on my 05 Grand Cherokee with the 4.7 V8 with 80k miles. Local trusted mechanic says all four O2 sensors are working and both catalysts generate at least 100 degrees via infrared thermometer. Tried to clean thinks up with SeaFoam and ChemTool products but the code would come back.What is the Cost to Diagnose the Code? Labor: 1.0. To diagnose the P0430 Honda 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.Bank 2. Bank 2 is the side of your Highlander’s engine with the second cylinder. Typically, the first cylinder is closer to the front of the engine. A quick Google search for your vehicle’s engine and model year can quickly confirm that. The bank 1 version of this code is P0420.

Bank 1 is on the side with cylinder 1. Bank 2 is the side with cylinder 2. Most commonly, Bank 1 is towards the front of the car if it has a transverse engine. The easiest way to discover the right cylinder bank is to check your car’s repair manual. You can also try to find any stamps on the cylinder block or head for any cylinder numbers.

Aug 17, 2023 · The only difference between P0430 and P0420 codes is in the location of the O2 sensor performing the measurement. The P0430 shows the problem at Bank 2, while the P0420 shows the problem at Bank 1. When you get both P0420 and P0430, usually, the only solution is to replace the CAT converter. What is the Cost to Diagnose the Code? Labor: 1.0. To diagnose the P0430 Toyota 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.Sep 14, 2018 · P0430 OBDII Code Defined. 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. The P0430 code is a diagnostic trouble code (DTC) that may appear on the vehicle’s onboard diagnostic (OBD-II) system. It specifically relates to the catalyst system’s efficiency, specifically in Bank 2 of the engine. Bank 2 typically refers to the side of the engine that does not contain the number one cylinder.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).Here's some info from when the code came up, I was driving at the time, 48mph at 1368 RPM STFT BANK 1 - 1.6% LTFT BANK 1 - -14.8% STFT BANK 2 - 1.6% LTFT BANK 2 - -10.6% Timing advance cylinder 1 - 6.5 degrees O2 bank 1 sensor 2 STFT - 99.2% O2 bank 2 sensor 2 STFT - 99.2% Bank 1 sensor 2 voltage - 0.115V Bank 2 sensor 2 voltage - 0.845VP0430 Definition: Catalyst System Efficiency Below Threshold (Bank 2) During the combustion cycle of your vehicle, the catalytic converter converts harmful pollutants into less harmful gases by breaking them down. Consequently, the vehicle will emit more harmful pollutants due to a malfunctioning catalytic converter.The P0430 code is a diagnostic trouble code that indicates an issue with the catalytic converter in a Honda Pilot. This code specifically refers to Bank 2, which is the side of the engine opposite to the cylinder number 1. When this code appears, it means that the catalytic converter on Bank 2 is not functioning properly and may need to be ...Dec 2, 2020 · 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 Ford Code - Catalyst System Efficiency Below Threshold Bank 2

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The SWIFT code for TD Canada Trust Bank is TDOMCATTTOR. If asked by the originator of the wire transfer for the full name and location of the bank, it is: Toronto-Dominion Bank, To...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. ... (Bank 2) Symptoms: Check engine light: Common Causes: Bad catalytic converter, O2 sensors: Breakdown Risk? Rarely (it’s an emissions code) Repair Cost (Parts) $250 …8913 posts · Joined 2007. #2 · Sep 14, 2017. Replacing the downstream O2 sensors will NEVER fix a 420/430. Failed sensors will store other codes. Possible the upstream sensor is lazy or contaminated causing chemical shift, but the most likely cause is a failing cat. If the cat isnt broken up and causing excessive back pressure, the easy fix ...P0430, “Catalyst System Efficiency Below Threshold (Bank 2)” means the issue triggering it is happening in Bank 2 (where your vehicle’s cylinder number 2 is located). According to our mechanic, “Generally, this code means that you need a new catalytic converter.”. When your car’s catalytic converter is working correctly, it breaks ...The P0430 code is an OBD-II trouble code that stands for “Catalyst System Efficiency Below Threshold (Bank 2)” which indicates a problem with the catalytic converter, which is located near engine Bank 2 (the engine’s opposite side from the number one cylinder). In this article, I will be talking about the P0430 trouble code, its symptoms ...What is the Cost to Diagnose the Code? Labor: 1.0. To diagnose the P0430 Dodge 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. Code P0430 2001 Ford Escape XLT V6. Code P0430. I know this code refers to the converter on bank 2. My question is the engine runs great even when the engine light comes on. I had an issue with cold start rough idle, but now it's fine. There is no power loss issue, no acceleration issue, no stalling issue. It ... This video shows how to address a P0430 (Catalytic Converter) error code which is an "Oxygen Sensor" component. The sensor costs about $50 in Amazon. The w... #1 · Feb 2, 2018. Hey guys, If the car throws a "P0430 catalyst effeciency below threshold bank 2" code. Which side catalytic converter is bank 2? Right or left from inside the car? …P0430. had the Check Engine light on my 05 Grand Cherokee with the 4.7 V8 with 80k miles. Local trusted mechanic says all four O2 sensors are working and both catalysts generate at least 100 degrees via infrared thermometer. Tried to clean thinks up with SeaFoam and ChemTool products but the code would come back.Code Fault Location Probable Cause; P0430: Catalytic converter system, bank 2 -efficiency below threshold (Buy Part On Amazon) Catalytic converter, wiring, HO2S 2 ….

CEL Code: P0430 Catalyst System Efficiency Below Threshold Bank 2 Step 1. Check 02 Sensors. How To Check 02 SensorCan someone estimate how much a mechanic would charge to check the sensors? If 02 sensor is malfunctioning, replace for roughly $100 each (OEM) or search for universal aftermarket ones. If sensor is working properly, proceed to step ...2015 - 2020 Ford F150 - P0420 & P0430 Catalyst Below Threshold codes on 2.7L - Good day folks, I have a 2020 STX w/ 2.7L and lately it as been spitting out two codes very randomly, sometimes it can take 2-3 weeks before it comes back after clearing. ... Location: Ontario. Posts: 810 Likes: 73 ... The code 420 bank 1 and 430 bank 2 are …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. ... (Bank 2) Symptoms: Check engine light: Common Causes: Bad catalytic converter, O2 sensors: Breakdown Risk? Rarely (it’s an emissions code) Repair Cost (Parts) $250 …2. Replace the oxygen sensors: Faulty oxygen sensors can sometimes trigger the P0430 code. Consider replacing them if they are old or worn out. 3. Clean or replace the catalytic converter: Over time, the catalytic converter can become clogged or damaged, leading to the P0430 code. Try cleaning it first using a specialized cleaner, …#catalyticconverterThis repair should also apply to the Buick enclave, Chevy traverse, and Saturn outlook of the same generationDownstream part # Bosch 16089Here's some info from when the code came up, I was driving at the time, 48mph at 1368 RPM STFT BANK 1 - 1.6% LTFT BANK 1 - -14.8% STFT BANK 2 - 1.6% LTFT BANK 2 - -10.6% Timing advance cylinder 1 - 6.5 degrees O2 bank 1 sensor 2 STFT - 99.2% O2 bank 2 sensor 2 STFT - 99.2% Bank 1 sensor 2 voltage - 0.115V Bank 2 …Bank 1 is on the side with cylinder 1. Bank 2 is the side with cylinder 2. Most commonly, Bank 1 is towards the front of the car if it has a transverse engine. The easiest way to discover the right cylinder bank is to check your car’s repair manual. You can also try to find any stamps on the cylinder block or head for any cylinder numbers.Nuke. 87 posts · Joined 2017. #6 · Nov 13, 2017. For the typical V8, yes. But for the 3.5L, and most american V6's AFAIK, it will be the passenger side. Number 1 in any V-type engine is supposed to be the most forward of the cylinders (with front being closest to radiator and back being closest to firewall). I don't know why it is, but for ... P0430 code bank 2 location, A Quick and Easy P0430 Test. You can determine if P0430 is caused by a bad oxygen sensor by swapping the bank one O2 sensors with the bank two O2 sensors. If the code changes to P0420, that would indicate …, 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., When the Powertrain control module ( PCM) throws a P0430 fault code, it means the bank 2 downstream O2 sensor has detected that the catalytic converter efficiency is below the manufacturers’ predetermined threshold. The P0430 diagnostic trouble code is generic, meaning it can appear on any vehicle type. , In the world of real estate, location is everything. Whether you’re looking to buy a property or rent an apartment, the neighborhood you choose can have a significant impact on the..., 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. ... (Bank 2) Symptoms: Check engine light: Common Causes: Bad catalytic converter, O2 sensors: Breakdown Risk? Rarely (it’s an emissions code) Repair Cost (Parts) $250 …, Here is an updated video with more information. https://www.youtube.com/watch?v=e1R843nLM0sHow to fix a Dodge with a P0430 code, "Catalyst System Efficiency ..., Have you ever received a call from an unfamiliar area code, leaving you curious about its origin? If you’ve recently come across the area code 844, you might be wondering where it ..., Find out what P0430 Jeep code means, how to diagnose and repair it, and what symptoms it may cause. Compare with other OBDII codes on AutoCodes., P0430, “Catalyst System Efficiency Below Threshold (Bank 2)” means the issue triggering it is happening in Bank 2 (where your vehicle’s cylinder number 2 is located). According to our mechanic, “Generally, this code means that you need a new catalytic converter.”. When your car’s catalytic converter is working correctly, it breaks ..., The most likely cause of a P0430 code is an inefficient upstream (or front) catalytic converter on the left side of the vehicle. Usually when an oxygen sensor is at fault, there is also a stored DTC for the oxygen sensor, or a leak in the exhaust near the sensor. Testing for the cause would involve scantool monitoring the rich-lean cycles of ..., P0430 Catalyst System Efficiency Below Threshold (Bank 2) The ECM compares the waveform of the oxygen sensor located before the. catalyst with the waveform of the oxygen sensor located after the catalyst. to determine whether or not catalyst performance has deteriorated. Air-fuel., 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. ... (Bank 2) Symptoms: Check engine light: Common Causes: Bad catalytic converter, O2 sensors: Breakdown Risk? Rarely (it’s an emissions code) Repair Cost (Parts) $250 …, =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code P0430 Saving Repair Parts..., Bank 1 is on the side with cylinder 1. Bank 2 is the side with cylinder 2. Most commonly, Bank 1 is towards the front of the car if it has a transverse engine. The easiest way to discover the right cylinder bank is to check your car’s repair manual. You can also try to find any stamps on the cylinder block or head for any cylinder numbers., CEL Code: P0430 Catalyst System Efficiency Below Threshold Bank 2 Step 1. Check 02 Sensors. How To Check 02 SensorCan someone estimate how much a mechanic would charge to check the sensors? If 02 sensor is malfunctioning, replace for roughly $100 each (OEM) or search for universal aftermarket ones. If sensor is working properly, proceed to step ..., Spacing the O2 sensor further out of the exhaust stream reduces the ability of the sensor to read the exhaust so the response slows down. If it slows down enough, it looks like the cat is doing its job and the P0420/430 code might clear. The problem is that if a sensor is failing, it looks like everything is fine., Definition: Catalyst system efficiency below threshold (bank 2) The P0430 engine code refers to a problem with your car’s three-way catalyst converter (bank 2), which is responsible for breaking down harmful pollutants from the combustion cycle and converting them into less harmful gases., A Quick and Easy P0430 Test. You can determine if P0430 is caused by a bad oxygen sensor by swapping the bank one O2 sensors with the bank two O2 sensors. If the code changes to P0420, that would indicate …, =====Claim your FREE error code eraser 👉 https://free.nonda.co 👈== How to Fix P0430 Error Code ====Error Code P0430 Saving Repair ..., Then set torque to display the O2 sensor outputs. You should then be able to see the levels cycling. Next step is to swap the offending sensors, (downstream usually), left/right & see if the fault stays on the one side, (bad cat), or swaps over, (bad sensor, much cheaper). I had this & it was a bad cat in the end., 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. ... (Bank 2) Symptoms: Check engine light: Common Causes: Bad catalytic converter, O2 sensors: Breakdown Risk? Rarely (it’s an emissions code) Repair Cost (Parts) $250 …, P0430 Code and O2 Sensor Bank Locations. I have a 2013 3.5L V6 Ecoboost. Continuing to get P0430 Code: Catalyst System Efficiency Below Threshold …, This code is specifically related to the catalytic converter bank 2, which is located on the passenger side of the engine. See Also: Ford Focus Check Engine Light The P0430 code can be triggered by a variety of issues, such as a failed oxygen sensor, a faulty catalytic converter, or issues with the exhaust system., Jul 29, 2023 · The P0430 code is a diagnostic trouble code (DTC) that may appear on the vehicle’s onboard diagnostic (OBD-II) system. It specifically relates to the catalyst system’s efficiency, specifically in Bank 2 of the engine. Bank 2 typically refers to the side of the engine that does not contain the number one cylinder. , #catalyticconverter, Bank 2. Bank 2 is the side of your Traverse’s engine with the second cylinder. Typically, the first cylinder is closer to the front of the engine. A quick Google search for your vehicle’s engine and model year can quickly confirm that. The bank 1 version of this code is P0420., Bank 2. Bank 2 is the side of your Murano’s engine with the second cylinder. Typically, the first cylinder is closer to the front of the engine. A quick Google search for your vehicle’s engine and model year can quickly confirm that. The bank 1 …, 8913 posts · Joined 2007. #2 · Sep 14, 2017. Replacing the downstream O2 sensors will NEVER fix a 420/430. Failed sensors will store other codes. Possible the upstream sensor is lazy or contaminated causing chemical shift, but the most likely cause is a failing cat. If the cat isnt broken up and causing excessive back pressure, the easy fix ..., 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. ... (Bank 2) Symptoms: Check engine light: Common Causes: Bad catalytic converter, O2 sensors: Breakdown Risk? Rarely (it’s an emissions code) Repair Cost (Parts) $250 …, 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 Dodge Code - Catalyst Efficiency Bank 2, 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. ... (Bank 2) Catalyst System Efficiency. Your Expedition’s exhaust contains hydrocarbons, carbon …, Bank 2. Bank 2 is the side of your MDX’s engine with the second cylinder. Typically, the first cylinder is closer to the front of the engine. A quick Google search for your vehicle’s engine and model year can quickly confirm that. The bank 1 version of this code is P0420., A code P0430 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; Possible Solutions First, inspect for exhaust leaks. Next step is to measure the voltage at the oxygen sensor on Bank 2.