P0430 code bank 2 location

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.

P0430 code bank 2 location. 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.

P0430 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.

As the code description implies the P0430 code means that the vehicle's Engine Control Module (ECM) has detected that the Three-way Catalyst Converter is not …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. How to repair P0430 Toyota code Catalyst System Efficiency Below Threshold Bank 2. The Engine Control Module (ECM) uses sensors mounted in front of and behind the Three-Way Catalytic Converter (TWC) to monitor its efficiency. The ... If the P0430 code is combined with other codes, try fixing the other codes first. ⚠ Check if …Sep 20, 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 Honda Pilot: P0430: Catalyst System Efficiency Below Threshold (Bank 2) Catalyst System Efficiency. Your Pilot’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses. 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 - Improper ignition timing - Engine ...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, …

This repair should also apply to the Buick enclave, Chevy traverse, and Saturn outlook of the same generationDownstream part # Bosch 16089As 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 Infiniti Code - Catalyst System Efficiency Below Threshold Bank 2It 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 …Have you ever received a call from an unfamiliar area code and wondered where it originated? If you’ve recently come across the area code 844, you’re not alone in your curiosity. I...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.Where is the bank 2 sensor 2 located? Bank 2 Sensor 2 Location A vehicle’s (bank 2, sensor 2) O2 sensor will be located behind or downstream of the catalytic converter on the bank which corresponds to the engine’s second cylinder. Can bad spark plugs cause a P0430 code? Yes, a bad spark plug can cause the P0430 code.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.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 - Improper ignition timing - Engine ...

Bank 2. Bank 2 is the side of your Envoy’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 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.Jul 7, 2009 ... P0430 Catalyst Efficiency Below Threshold (Bank 2) ... Code P0430 "Catalyst System Low Efficiency Bank 2" ... Location. Virginia. Posts: 7. Profile.Have you ever received a phone call from an unknown number with the area code 818? If so, you may have wondered where this area code is located. In this ultimate guide, we will exp...The Bank of America website features a Locations link at the top of each page allowing users to find branch and ATM locations. The user enters a ZIP code, address or city and state...

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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 ...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.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. How to repair P0430 Toyota code Catalyst System Efficiency Below Threshold Bank 2. The Engine Control Module (ECM) uses sensors mounted in front of and behind the Three-Way Catalytic Converter (TWC) to monitor its efficiency. The ... If the P0430 code is combined with other codes, try fixing the other codes first. ⚠ Check if …Woodforest National Bank has over 700 branches for patrons to visit. The branches are scattered across the southern, eastern, and central part of the United States. To find the clo...

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 ...Bank 2. Bank 2 is the side of your Pathfinder’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.Nov 21, 2023 · Where is the P0430 sensor located? Due to the nature of its job, the downstream sensor is always found behind the catalytic converter. 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. Even 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.Code Fault Location Probable Cause; P0430: Catalytic converter system, bank 2 -efficiency below threshold (Buy Part On Amazon): Catalytic converter, exhaust manifold, wiring, o2 sensorsA 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.A bank identification code (BIC) or SWIFT code identifies each specific bank. Transferring money between banks, especially international banks, is a key use for these codes. The ch...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.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 …

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 ...

Hey guys! I’ll be replacing the front cat on my Accord due to me having a P0430 CEL. There isn’t a video on Youtube currently on how to replace it so I decid...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 …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.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 Infiniti Code - Catalyst System Efficiency Below Threshold Bank 2Jun 8, 2011 · 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 …OBD2 Diagnostic Trouble Code P0430 means that the sensor in the catalytic converter located in bank 2 has detected the catalytic converter’s efficiency below the threshold. A catalytic converter’s job is to burn up the remaining raw fuel after the combustion process and to eliminate or reduce harmful emissions.Jan 14, 2023 · This repair should also apply to the Buick enclave, Chevy traverse, and Saturn outlook of the same generationDownstream part # Bosch 16089 Hey guys! I’ll be replacing the front cat on my Accord due to me having a P0430 CEL. There isn’t a video on Youtube currently on how to replace it so I decid...

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Down-stream, or post-cat sensors will be sensor 2. The bank# will tell you which side of the engine the sensor is on, with bank1 usually being ...Dec 31, 2019 ... Bank 2 means the whole passenger side and not front or back. ... Anything to do with fuel delivery, air intake and exhaust can impact the ...P0430 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.Bank 2 is the side of your Pilot’s engine with the second cylinder. Typically, the first cylinder is closer to the front of the engine. A quick Google search for your …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 …Even 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 …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 ...HVAC Mechanic. 47.4K subscribers. 263. 33K views 1 year ago. How to fix a Toyota P0430 Code: Catalyst System Efficiency Below Threshold (Bank 2) Link to …July 7, 2019. #1. 2011 Explorer, 108k. The check engine light recently came on my Explorer, code P0430 - Catalyst System Efficiency Below Threshold (Bank 2). After some online the research the easy signs pointed to the downstream O2 sensor on bank two. I replaced both downstream sensors and reset the codes. It threw the code again after a …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 …The P0430 code indicates that the powertrain control module (PCM) detects the poor efficiency of the catalytic converter at Bank 2. Basically, Bank 1 and Bank 2 are the two sides of the engine. Bank 1 represents the side of the car’s engine containing cylinder No. 1, while Bank 2 represents the opposite side of Bank 1. ….

So, what does the code P0430 mean? This error code is sent when your downstream oxygen sensor on bank two notices an irregularity in your catalytic converter’s …Ok so is Bank #2 the the more silver looking part of the exhaust closer to the engine or is bank #2 in a different location? Save Share. Like. jbone2470. ... A code P0430 may mean that one or more of the following has happened: The catalytic converter is no longer functioning properlyHas your check engine light recently turned on? Are you seeing the dreaded error code P0420 on your vehicle’s diagnostic scanner? Don’t panic just yet. Code P0420 is a common issue...141 posts · Joined 2008. #2 · Aug 16, 2009. P0430 - Catalyst System Efficiency Below Threshold (Bank 2) Bank 2 is the post O2 readings are not what is expected. Try checking for exhaust leaks or changing the post O2 sensors before changing the cats. Normal wear on cats is more than 130K. But I have to say that in a couple of …Are you tired of paying exorbitant prices at the pump? With gas prices constantly fluctuating, it can be a challenge to find the most affordable options. However, there’s a little-...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...2,606. Reaction score. 1,480. Location. Ft Lauderdale. If you're near a Ford dealer I would have them look at it the next time you get the P0430 code. Could be a cat going bad or defective with such low mileage on it. Or you can drop it off there and tell them you've had it at least 5 times now and they can test it.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.Bank 2. Bank 2 is the side of your Grand Cherokee’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.Oct 14, 2016 ... P0430 would be for the o2 sensor before the CAT (driver side). For that one I had to remove the front tire. Now, if you have long arms and your ... P0430 code bank 2 location, P0430 bank 2. I have had this pop up twice now when under heavy acceleration. I clear the code and it stays away for a while. I have a full custom SS Bam exhaust with cats (4) from the stock manifolds back. The O2 sensors are stock and original with 100,000 miles on them., 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 …, Feb 28, 2019 ... Hello. I have a 2010 Acacia SLT that recently threw a P0430 code for catalytic converter bank 2. I have had that code pop up once before, ..., #catalyticconverter, 46481 posts · Joined 2012. #2 · Apr 20, 2023. A P0430 code indicates a Bank 2 catalytic converter issue. This code indicates that the downstream oxygen sensor (placed after the catalytic converter) detects inefficient operation. This code occurs when the catalytic converter fails to reduce exhaust gas pollutants to the specified limits., 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 - 0.845V, 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 ..., 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..., 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 …, If you’re looking for a reliable and trustworthy bank in Dubai, the Commercial Bank of Dubai should be on your list. One of the greatest benefits of banking with them is their many..., OBD2 Diagnostic Trouble Code P0430 means that the sensor in the catalytic converter located in bank 2 has detected the catalytic converter’s efficiency below the threshold. A catalytic converter’s job is to burn up the remaining raw fuel after the combustion process and to eliminate or reduce harmful emissions., 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 …, 2007 Jeep Wrangler 3.8L (~200,000km's) P0430 code. O2 sensor info off OBD live data: B1S1 good. B1S2 good. B2S1 good. B2S2 NOT good = fluctuates from 0.2 to 0.8 intermittently. @ 2500RPM it becomes worse and fluctuates all over the place rapidly. Fuel trim off OBD live data: STFT1 good., 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 …, Jun 25, 2011 ... 5th Generation Maxima (2000-2003) - Help with code P0430 Catalytic Efficiency Below Threshold Bank 2 - I seen some post's on this issue ..., 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 …, If you’re looking for a reliable and trustworthy bank in Dubai, the Commercial Bank of Dubai should be on your list. One of the greatest benefits of banking with them is their many..., Mar 12, 2020 ... P0430 indicates that the main three way catalytic converter on bank 2 conversion level is too low. Clear the code, if it returns, you need a new ..., 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 ..., A bank account sort code is a six-digit number that is used in the United Kingdom and Ireland to identify the specific bank and branch where an account is held. The number is most ..., =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code HONDA P0430 Saving Repai..., Repair Information for P0430 Nissan code. Learn what Catalyst System Efficiency Below Threshold Bank 2 means, location and how to repair? The Engine …, 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 ..., 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 …, The currently selected ODB-ii codes is for the Lincoln makes. 2. Look up the other OBD II Trouble Codes, please use the search box. Enter the 5 character trouble codes in the search box and submit the search. 3. Don’t assume a particular OBD-II code means the same for other auto manufacturers as there are many makes specific codes in use. 4., 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 …, 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 ..., 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 …, The P0430 code indicates that the powertrain control module (PCM) detects the poor efficiency of the catalytic converter at Bank 2. Basically, Bank 1 and Bank 2 are the two sides of the engine. Bank 1 represents the side of the car’s engine containing cylinder No. 1, while Bank 2 represents the opposite side of Bank 1., 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 …, 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 …, 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.