Code p0430 nissan

To diagnose the P0430 2002 Nissan Altima Sedan 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.

Code p0430 nissan. This page is meant to help you troubleshoot the Nissan Serena 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 Contents

The P0430 code is a common diagnostic trouble code (DTC) that may appear on the onboard computer of your Nissan Xterra. This subheading will delve into what exactly this code means and how it affects your vehicle’s performance. Answer: The P0430 code refers to a malfunction in the catalytic converter’s efficiency.

El código P0430 en Nissan Frontier indica un mal funcionamiento en el sistema de control del catalizador. Esto puede deberse a varias razones. Una de ellas es la obstrucción o deterioro de los sensores del catalizador, así como la falta de combustible adecuado para su buen funcionamiento. Además, si los filtros de aire se encuentran muy ...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. Tags cat convereter computer exhaust p0430. ... So about a year and a half ago I got this code. I took it to the shop and ended up replacing all 4 O2 sensors, the right Cat and also had to flash the computer. ... Nissan Titan Talk Forum is a community for truck owners to discuss the Titan Cummins, Warrior, Midnight Edition and more ...This page is meant to help you troubleshoot the Nissan Frontier 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 ContentsI 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.

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. It is most likely that an O2 sensor just prior to the catalytic converter has gone "lazy" and is not reading properly.Here’s a good P0420 diagnostic order for the Nissan Pathfinder: 1. Check for Other Codes. The first thing you want to do when trying to fix P0420 in the Pathfinder is to verify there aren’t any other trouble codes. Three types of codes can give clues as to what’s going on with your vehicle. Misfire Codes.Sep 13, 2017 ... Donar Donate: https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=FTZHB94HM4XV4¤cy_code=USD&source=url Poblema con el upper ...How to diagnose DTC P0430 on a Nissan Maxima: This trouble code typically comes to an owner’s attention in one of two ways – when the check engine light (or more properly, the “Malfunction Indicator Lamp”) is lit, there’s a surprisingly decent chance that the issue is either DTC P0430 or DTC P0420 – catalytic converter issues really are quite common – so much so that this is one ...This page is meant to help you troubleshoot the Nissan Navara 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 Contents. Quick ...

4) I cleared my CEL code, and all was good after the install of the new sensors. 5) The Osiris software does the flashing, Cipher does the logging and clearing of the CEL. incidentally, you can buy a $30 scanner from anywhere and get rid of your codes.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. It is most likely that an O2 sensor just prior to the catalytic converter has gone "lazy" and is not reading properly.Some common causes of code P0340 could include the following-. Damaged, burnt, shorted, disconnected, or corroded wiring and/or connectors. Defective camshaft position sensor. Use of substandard, aftermarket camshaft position sensor (s) Mechanical issues such as damaged or stretched timing chains, which is common on …How To Fix a Nissan P0420 engine code: Catalyst System Efficiency Below Threshold Bank 1Link to Cataclean on Amazon: https://amzn.to/3TSI6xWHow To Test Oxyge...

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Nissan OBD II P0430 Trouble Code. Nissan Maximas, from the late 1990s into the 2000s, frequently faced P0430 trouble codes. The main culprit is usually a failed catalytic converter. A complete replacement of the cat assembly is required to clear the code reliably on these cars.Apr 4, 2013 ... The cats/o2 sensors could be on the way out, but this is a fairly common problem especially when it is very cold. It is not a code that will do ...Process: 1) Lift the car either using jack stands or a lift. Make sure the car is secure. 2) Here are the two sensors that result in the P0420 or P0430 code. The driver side is bank 1 and gives the P0420. The passenger side is bank 2 and gives the P0430. 3) Driver side sensor: Passenger side sensor:Here’s a good P0420 diagnostic order for the Nissan Sentra: 1. Check for Other Codes. The first thing you want to do when trying to fix P0420 in the Sentra is to verify there aren’t any other trouble codes. Three types of codes can give clues as to what’s going on with your car. Misfire Codes.

What is the Cost to Diagnose the Code P0430 2010 Nissan Sentra? Labor: 1.0. The cost to diagnose the P0430 2010 Nissan Sentra code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type.P0430 is a generic diagnostic trouble code that indicates a malfunction within the catalyst system. It may been seen with misfire codes and oxygen sensor codes. What the …P0430 is the code for Bank 2, which is the front bank. There are actually 3 cats on a 2001: 2 pre-cats and 1 main cat, and that code is for the front pre-cat. ... Try to get Nissan to replace it under the 8/80 long term emissions defect warranty or any other extended warranty you have. 2. Try replacing the Bank 2 downstream O2 sensor …While the most common causes of the P0430 code are a faulty catalytic converter and faulty O2 sensor, P0430 can also be caused by other issues: A catalyst defect due to aging. Malfunctioning oxygen sensor (lambda sensor) circuits. A faulty front and/or rear lambda sensor. Damaged lambda sensor wiring. Leakage of mass airflow sensor.Here is the situation. Was getting the typical P0430 code and took it in to the shop since my inspection was due. I had cleared the codes but there was a P0430 pending. After I got it back, a few days later I am throwing the P0430 code again. From what I have read, the P0430 is for the driver's side bank. Is this correct?Location: TX. Posts: 5. Drives: 14 Nissan 370Z MB AT. Rep Power: 7. Code P0430 - Aftermarket Exhaust. Hey guys, first time posting here. I just had my "Service Engine Soon" light come on after buying my 2014 370z 3 months ago. There are about 15k miles on the car, and the previous owner had a custom exhaust installed, as well as dual air ...2015 qx80 p0430 and p0420 pending. A forum for the Nissan Armada, Infiniti QX56, and beginning in 2014, the Infiniti QX80. Post Reply . Print view; Search Advanced search. 3 posts • Page 1 of 1. ohyunjin Posts: 6 Joined: Mon Oct 05, 2015 8:24 am Car: Infiniti FX35 2015 Infiniti QX80.The P0430 code in a Nissan 370Z will often be thrown if one of your car’s oxygen sensors is not functioning correctly. There are rarely drivability issues associated …Pops. Bad Gas can cause that code to appear so you might want to consider resetting it and see if it returns. If it does return, I've heard that a bad MAF Sensor can also cause it but if you're only reporting P0430 (Bank 2) and not P0420 (Bank 1) then it can likely be the Bank 2 Cat gone bad. A new OEM Cat will likely cost $150-$200 for the ...

Apr 30, 2021 ... Comments26 ; How to diagnose and repair a PO420 on a Nissan Altima. Jimthecarguy · 688K views ; The Trainer #118: The REAL Cause Of P0420/P0430 ...

The bank 2 version of this code is P0430. ... The P0420 code in a Nissan Armada 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. ...=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code P0430 Saving Repair Parts:C...Catalytic Converter P0430 code Repair. Tags bank 2 catalytic converter p0430. ... A forum community dedicated to Nissan Xterra owners and enthusiasts. Come join the discussion about superchargers, modifications, troubleshooting, maintenance, overlanding, towing capacity, and more!What is the Cost to Diagnose the Code P0430 2016 Chevrolet Silverado? Labor: 1.0. To diagnose the P0430 2016 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.By the way, this code is extremely similar to code P0420 - which means essentially the same thing, just for the catalytic converter on the other bank of cylinders. What does DTC P0430 mean on a Nissan Leaf? OBD Code P0430 is a generic OBD II Code - meaning that it applies to every applicable vehicle manufactured since the year 1996.Oxygen sensor failure isn't too common, but it does happen. Failure tends to be related to high soot content. If either oxygen sensor records incorrect readings, the P0430 code will show up. If the upstream readings are too low, but the downstream results are correct, it'll look like the cat isn't working.This page is meant to help you troubleshoot the Nissan Micra 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 Contents. Quick ...2 posts · Joined 2014. #1 · Jan 14, 2014. Getting an intermittent P0430:Low code on my 2005 Armada with 165k miles when the weather changes. Get the code when it is warm and the code goes away when it get cold. I have replaced the gas cap several months ago because at first the code came and went when I filled up the gas tank.

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This page is meant to help you troubleshoot the Nissan Rogue 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 …The truck now idles fine with no high idle codes. But my P0420 and P0430 codes are still showing and I still have god awful mileage. I called my local Nissan dealership and they said the cats either went bad, a sensor went bad, or my spark plugs were not the correct ones. I pulled my plugs and they are what I bought, NGK platinum …This page is meant to help you troubleshoot the Nissan Titan 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 Contents. …2007 NISSAN PATHFINDER PO448, P0430, 02 SENSOR. 0 votes . 209 views. asked Jul 23, 2018 by Debbie. ... With code P0430 what is the position of O2 sensor for 2006 Nissan Pathfinder LE 4.0L. asked May 8, 2018 by Sergio. p0430; p0420; nissan; pathfinder; 36.9k questions 32.1k answers 1.3k comments 22.6k usersNissan DTC P0430 Make: Nissan Code: P0430 Definition: Catalyst System Efficiency Below Threshhold (Bank 2) Description: Three way catalyst (manifold) does not operate properly. Three way catalyst (manifold) does not have enough oxygen storage capacity. Cause: Three way catalyst (manifold) Exhaust tube;This page is meant to help you troubleshoot the Nissan Juke 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 ContentsTry to get Nissan to replace it under the 8/80 long term emissions defect warranty or any other extended warranty you have. 2. Try replacing the Bank 2 downstream O2 sensor (sensor 2), clear the codes, and see the code comes back. 3. Get an O2 simulator from O2 Simulator, E-commerce to trick the ECU into thinking the pre-cat is working fine.I got a CEL the other day, and used my Cortex to read the code, which came up P0430, which is "Catalyst Efficiency below Threshold Bank 2". I poked around the forums and on Google, and I didn't really see a consensus on the likely cause, other than it's likely a bad O2 sensor or a bad catalyst. I logged some data briefly, which is below. ….

By the way, this code is extremely similar to code P0420 - which means essentially the same thing, just for the catalytic converter on the other bank of cylinders. What does DTC P0430 mean on a Nissan Murano? OBD Code P0430 is a generic OBD II Code - meaning that it applies to every applicable vehicle manufactured since the year 1996.The P0340 diagnostic trouble code indicates a problem with the camshaft position sensor circuit. Find out how to fix it in this article! ... Popular Engine Codes P0420 P0172 P00171 P0128 P0300 P0456 P0430 P0442 P0455 P0113. ... I have a 2010 Nissan Pathfinder that has been turning over sluggishly for a while now. It cut out today and the codes ...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 fixed as soon as possible. Diagnosis: It is important to complete the entire diagnostic process when diagnosing the P0430 code.2017 Honda Pilot - P0430 code. I recently got the Emission System Problem light come on. After the ODO Scan, it came up with the P0430 code Catalyst System Efficiency - Below Threshold (Bank 2). When I did a search, I was able to locate the Honda Service Bulletin 20-100 on the NHTSA site.Labor: 1.0. To diagnose the P0442 Nissan 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 2007 Nissan Murano Code - Catalyst System Efficiency Below Threshold Bank 2 - Code Popularity: 7,964 Views - Repair Importance Level: 2/3The P0420 and the P0430 codes are caused by catalyst inefficiency. Replacing your catalytic converter is costly, so, knowing if a new catalytic converter is needed pays off. Your car’s exhaust system (below) comprises: a catalytic converter (s), at least two oxygen sensors and exhaust pipes that route the engine’s exhaust from the engine ...Check engine light code P0456 means the evaporative emission control system leak (small). Find out how to fix it in this article! ... Popular Engine Codes P0420 P0172 P00171 P0128 P0300 P0456 P0430 P0442 P0455 P0113. ... Nissan Pathfinder vs. Toyota Highlander | The Best Model Year For Every Budget DOWNLOAD THE APP. About.The most common fix for P0430 in the Nissan Sentra is a new catalytic converter, followed by replacing the Oxygen sensor. Before taking your Sentra into an exhaust shop for a new catalytic converter, let's ensure that's what you need. Here's a good P0430 diagnostic order for the Nissan Sentra: 1. Check for Other Codes.The cost to diagnose the P0430 2006 Nissan Murano code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour. Code p0430 nissan, P0430 & P1574. First code, a 'universal/generic' OBD code P0430, "Catalyst System Efficiency Below Threshold (Bank 2)." Description: Basically this means that the oxygen sensor downstream of the catalytic converter on bank 2 is detecting that the converter is not working as efficiently as it should be (according to specs)., themaildude Discussion starter. 1432 posts · Joined 2005. #1 · Sep 5, 2009. P0420 catalyst system below threshold (bank 1) p0430 catalyst system below threshold (bank 2) Had my SES light come on going to work last night. When I hooked up Cipher I had these two codes. I Just reflashed my ECU with a new tune from Uprev a few days ago and am ..., All Activity. P0420 - or - P0430 - o2 sensor or catalytic converter. My Pathy threw a P0420 yesterday. I found that means the bank 1 front catalytic converter is operating below expected threshold. It determines this by comparing the switching frequency of the front o2 sensor to the back o2 sensor, and if the back o2 sensor is switching ..., The most common fix for P0430 in the Nissan 370Z is a new catalytic converter, followed by replacing the Oxygen sensor. Before taking your 370Z into an exhaust shop for a new catalytic converter, let’s ensure that’s what you need. Here’s a good P0430 diagnostic order for the Nissan 370Z: 1. Check for Other Codes., If the converter is inefficient, that ratio will be closer to 1:1 ratio. There are several things that can cause the P0430 code, but probably 95% of the time or better, it's the catalytic converter. ... Nissan Forums is the go to place to talk about your favorite Nissan model, including the Rogue, Maxima, Altima and even sports cars like the ..., Nissan 2004 Titan with 5.6 it is throwing P0430 code. Won't drive over 45-miles per hour. I know that is the code for catalytic converter. but I have also heard that it could be an O2 sensor., Aug 28, 2017 ... ... P0430 Code. 99K views · 6 years ago ...more. Sergii Kvasnyi. 739 ... Catalytic Converter Replacement Nissan Xterra Pathfinder Frontier Code P0420 ..., 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. ... Nissan 370Z P0430 Code: Causes + How to Fix. Buick Verano P0430 Code: Causes + How to Fix. Jason on Mazda 6 P0320: Meaning, Causes, & Diagnosis. That is RIDICULOUS, Cheryl. You can ..., P0430 Code. Tags cat convereter computer exhaust p0430. ... So about a year and a half ago I got this code. I took it to the shop and ended up replacing all 4 O2 sensors, the right Cat and also had to flash the computer. ... Nissan Titan Talk Forum is a community for truck owners to discuss the Titan Cummins, Warrior, Midnight Edition and more ..., So I have code p0430 on my 2005 V6 Frontier... catalyst bank 2 below threshold or something along those lines... when I check the o2 sensors voltage with my OBD2 scanner (veepeak bluetooth) and OBD Fusion it shows o2 sensor number 1 will not go above .30 volts.... sensor number 2 jumps up to .80 volts and fluctuates as it should (or so I assume)., 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 (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 ..., Get Your Code Fixed Fast; Find a Shop. Popular Engine Codes po420 code po172 code po0171 code po128 code po300 code po456 code po430 code po442 code po455 code po113 code. Fixed It But The Check Engine Light Is Still On? Check engine light sometimes need to be reset manually, check out our article:, The truck now idles fine with no high idle codes. But my P0420 and P0430 codes are still showing and I still have god awful mileage. I called my local Nissan dealership and they said the cats either went bad, a sensor went bad, or my spark plugs were not the correct ones. I pulled my plugs and they are what I bought, NGK platinum …, 1998 Nissan 200SX SE-Blue. Save Share. Like. S. ... I don't see a problem replacing those valve cover gaskets but don't expect it to do anything for your P0430 code. 1) If you're going to replace both valve cover gasket sets I'd recommend a valve adjustment while you're in there. The rear valve cover is a real bear to get out so if you're not a ..., If the converter is inefficient, that ratio will be closer to 1:1 ratio. There are several things that can cause the P0430 code, but probably 95% of the time or better, it's the catalytic converter. Bank #2 would be the converter on the left, or driver's side of the vehicle, which sits between the front and rear O2 sensors., echo_nine Discussion starter. 1049 posts · Joined 2010. #1 · Jun 11, 2011. Hey guys anyone have these come up at the same time. P0420 is bank sensor 1 malfunction and p0430 is bank sensor 2 malfunction. So somewhere from the headers to my rear o2 sensors something is bad on both sides. Could it be cracked manifolds …, My husband had a friend run the codes which came up P0448, P0430 and 02 sensor. I was driving it a few days ago and it just stopped, when I tried to start it again it was really loud, it would only go 10-15 mph, and only got a mile and stopped again. I got it to Nissan Dealership and they Diagnosed., It covers the P0430 code's meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a …, SES P0430 Code. Jump to Latest ... Welcome to our Nissan Frontier Forum! A premier community to share your mods and builds. Chat with like-minded Frontier owners. Show Less . Full Forum Listing. Explore Our Forums. General Discussion - Frontier Related New Member Introductions 1st Gen Hangout 2nd Gen - Exterior 2nd Gen - Suspension., A malfunctioning valve can trigger the P0448 code. 2. Blocked or damaged EVAP canister: The EVAP (Evaporative Emission Control System) canister captures and stores fuel vapors, preventing them from escaping into the atmosphere. If the canister is blocked or damaged, it can lead to the P0448 code. 3., Re: 2015 qx80 p0430 and p0420 pending. Post by VStar650CL » Fri Oct 28, 2022 5:21 am. When they're by themselves, those codes always mean dying cats. When they're pending it means they didn't reoccur on a second trip, so it's likely the cats are "on the edge" and you have some time before they get really bad. Someone else will have to …, Here's a good P0420 diagnostic order for the Nissan Versa: 1. Check for Other Codes. The first thing you want to do when trying to fix P0420 in the Versa is to verify there aren't any other trouble codes. Three types of codes can give clues as to what's going on with your car. Misfire Codes., This page is meant to help you troubleshoot the Nissan Frontier P0420 trouble code. It covers the P0420 code's meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. ... The bank 2 version of this code is P0430., P0430 code. Jump to Latest Follow ... Nissan Titan Forum. 3.9M posts 144.7K members Since 2003 Nissan Titan Talk Forum is a community for truck owners to discuss the Titan Cummins, Warrior, Midnight Edition and more! Show Less . Full Forum Listing. Explore Our Forums ..., What is the Cost to Diagnose the Code P0430 2010 Nissan Pathfinder? Labor: 1.0. The cost to diagnose the P0430 2010 Nissan Pathfinder code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type., If your code P0430 is from a faulty catalytic converter, there’s a good chance your exhaust will give off a rotten egg smell. The longer you let the problem continue, the worse the smell is going to get. #3 – Lack of Power. Sometimes your vehicle will have a code P0430 even if the catalytic converter is working as it should., Apr 30, 2021 · How to Fix NISSAN P0430 Engine Code in 3 Minutes [3 DIY Methods / Only $4.97] - YouTube. nonda. 91K subscribers. Subscribed. 315. 54K views 2 years ago UNITED STATES.... , themaildude Discussion starter. 1432 posts · Joined 2005. #1 · Sep 5, 2009. P0420 catalyst system below threshold (bank 1) p0430 catalyst system below threshold (bank 2) Had my SES light come on going to work last night. When I hooked up Cipher I had these two codes. I Just reflashed my ECU with a new tune from Uprev a few days ago and am ..., Nissan produces solid and dependable cars. However, with new versions of the Versa, Sentra, Altima, Maxima, LEAF, Juke, 370Z and GT-R made in 2020 alone, it may not be obvious whic..., 2005 Nissan Titan, P0420 P0430. I have a 2005 Nissan Titan LE, 5.6L V8. I have engine codes that came up P0430 and P0420. They also repeat twice., P0430. Catalyst system effiency below threshold-bank2. -air leak in exhaust before ho2s. -af sensor. - fuel system fault-. Faulty catalytic converter. Anyone know what this possibly could be? Very much appreciate any input. 2005 nissan frontier 4x4 se manual (stock), How to fix a P0430 engine code: Catalyst System Efficiency Below Threshold Bank 2How To Test Oxygen Sensor Heater Element Video: https://www.youtube.com/wat..., 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 ...