P0430 f150

2009 - 2014 Ford F150 - PO430 Code - Today, my 2012 f150 with a 5.0 litre engine threw a PO430 code (catalyst system efficiency below threshhold bank 2). The truck only has a bit over 21,000 km. on it. Yesterday, to avoid an accident, I had to accelerate much harder than usual to avoid an oncoming vehicle. Other than...

P0430 f150. Jan 28, 2022 · The P0430 fault code is a common one, and it stands for catalyst system efficiency below the threshold (Bank 2). This means that the catalytic converter on bank 2 exhaust manifold isn’t functioning efficiently and is sending excess pollution into the environment. There are a couple of things that can cause the P0430 code, and the check engine ...

This page is meant to help you troubleshoot the Ford Mustang 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. …

#p0420 #p0430 #catalyticconvertercodes #badcat #autel #motoragetrainingThe “Catalytic Converter Efficiency” codes, P0420 and P0430, are among the top 10 DTCs...The cost to diagnose the P0430 1997 Ford F150 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 …Sometimes an Italian tune up is all we need! P0430 on my '19. I gave it a similar italian tune up while waiting a few days for dealer appt. Code went off but they found it in memory and ran a tsb. Basically a ford approved blowout of the cats with a few WOT accelerations followed by some O2 measurements.P0430 2003 Ford F150 Code - Catalyst System Efficiency Below Threshold Bank 2. How to Fix. Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.For More Info visit us at: http://1aau.to/h/cvP/Is your Check Engine Light on? The trouble code P0430 suggests there might be a problem with your catalytic c...The 2015 Ford F-150 is available with truck beds in 5.5, 6.5 and 8-foot lengths. The bed is approximately 80 inches wide, including the sides of the bed itself. Only certain truck ...It’s important to take into consideration style, finish, controls, whether or not it has a sprayer, and accessories. Watch this video to find out more. Expert Advice On Improving Y...

2016 F150 Ecoboost 3.5 P0420 and P0430. poofyo101. 2015 - 2020 F150. 24. 04-16-2019 10:14 PM. Still major trouble. Graham1222. 1997-2006 Expedition & Navigator. 7.A Ford F150’s fuel tank capacity varies between 23 and 36 gallons depending on whether or not the purchased vehicle is standard or extended range. The Ford F150’s cab style also af...Apr 11, 2022 · Joined Apr 11, 2022. 3 Posts. Discussion starter · #1 · Apr 11, 2022. Hello, I got P0430 (catalyst efficiency below threshold) 2 days after the spark plug change. I changed the spark plugs but didn't change the coils. OBD2 scanner can't detect any misfires, but sometimes RPM is not constant at idle. Also, I observed a 25% decrease in MPG. Discussion starter · #1 · Oct 5, 2017. New to the forum and I am chasing the cause of an 0430 code. Bank 2 Efficiency below threshold. I have the Torque Pro app on my phone and an ELM connected. First thing I did was check the voltage of the O2 downstream sensors. Bank 1 was steady.Had the same code. The code reader showed a steady ramp up and ramp down on the O2 signal indicating a bad cat. If it's really sharp, almost glitchy, it's probably the sensor. 2. Reply. Able-Stretch9223 • 6 mo. ago. Thanks for the info, I'll try a better code reader and see what's up.

=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code FORD P0430 Saving Repair...Inflation is a real issue. Luckily, some credit cards can provide perks and a strong return on spending — either of which can help you beat inflation. Here are the cards we're usin...General F150 Discussion - CVF catted down pipes throwing cel codes P0420 & P0430 - Just installed CVf catted down pipes was good for 2 days and now I’m getting 2 codes P0420 & P0430, have cat back exhaust, catch can, turbo inlet tubes AMS, catch can, cold air intake open element, and 5-star 93 performance tune for...2010 F150 5.4L 3V 187,300 miles The service engine light came on while driving a couple days ago. When I got home I checked the codes and the only code stored was P0430 (Catalyst System Efficiency Below Threshold Bank 2).I cleared the code and drove for a couple more days and the service engine light came on again and it stored …Maintenance Shop - 2019 F150 2.7l ecoboost P0430 - Hi all, I'm new here and am hoping to find some answers and learn some things. I bought a used 2019 f150 2.7l ecoboost 2 weeks ago with 41,000 miles on it. This afternoon I got on the gas peddle while merging onto the highway and the CEL came on, P0430 code on...PO430 Code. Today, my 2012 f150 with a 5.0 litre engine threw a PO430 code (catalyst system efficiency below threshhold bank 2). The truck only has a bit over 21,000 km. on it. Yesterday, to avoid an accident, I had to accelerate much harder than usual to avoid an oncoming vehicle.

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Discussion starter · #1 · Oct 5, 2017. New to the forum and I am chasing the cause of an 0430 code. Bank 2 Efficiency below threshold. I have the Torque Pro app on my phone and an ELM connected. First thing I did was check the voltage of the O2 downstream sensors. Bank 1 was steady.Jan 28, 2022 · The P0430 fault code is a common one, and it stands for catalyst system efficiency below the threshold (Bank 2). This means that the catalytic converter on bank 2 exhaust manifold isn’t functioning efficiently and is sending excess pollution into the environment. There are a couple of things that can cause the P0430 code, and the check engine ... Went ahead and replaced both with CVF Stainless Steel Catted Downpipes and Big Daddies Garage Mini CAT O2 Sensor CEL Fix spacer on the each rear O2 sensors. Within a few minutes of driving, I now have P2096, P2098, P0430, P0420 codes and it seems to surge/bog down slightly at idle. Also seems a little more laggy than before.When a P0430 error code appears on a Ford F150, it usually means that there is a problem with the catalytic converter or one of the oxygen sensors. There are a few steps and methods that can be taken to diagnose the issue and find a solution to fix it.Apr 11, 2010 · 1999 to 2016 Super Duty - BOTH P0420 AND P0430 CODES - Hello all. I'm a new member. I just purchased a 2006 f-250 4x4 extended cab with a 5.4 triton. I bought this truck from the chicago area which is about 175 mile north of my home. P0420. Mechanic checked o2 sensors and said they were still ok. We ended up replacing the cat as it was below threshold with an OEM Ford Cat. Cleared the code, drove for 30 miles and CEL comes …

Jan 28, 2022 · The P0430 fault code is a common one, and it stands for catalyst system efficiency below the threshold (Bank 2). This means that the catalytic converter on bank 2 exhaust manifold isn’t functioning efficiently and is sending excess pollution into the environment. There are a couple of things that can cause the P0430 code, and the check engine ... F150 EGR problem P0401,.... solved. by mrbillr » Sun Feb 26, 2006 11:15 pm. 1997 F150, 4.6 with 130,000 miles. Last month my Check Engine light came on, nothing else appeared to be wrong. I had the code read at AutoZone and it said "Code P0401 EGR insufficient flow". I went inside and bought an EGR valve. I was told it normally takes up …PO430 Code. Today, my 2012 f150 with a 5.0 litre engine threw a PO430 code (catalyst system efficiency below threshhold bank 2). The truck only has a bit over 21,000 km. on it. Yesterday, to avoid an accident, I had to accelerate much harder than usual to avoid an oncoming vehicle.To diagnose the P0430 2001 Ford F150 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.Here's how to bypass or trick the O2 sensor into thinking your catalytic converter is working when you have the P0420/P0430 check engine light code. May or m...Action: Follow the Service Procedure steps to correct the condition on vehicles that meet all of the following criteria: 2021 F-150. 3.5L EcoBoost engine. Built on or before 02-Mar-2021. Exhibits an illuminated MIL with DTCs P060B, P0420, P0430, P04F0, P2601 and/or P0364 stored in the PCM. Warranty Status: Eligible under provisions of New ...Apr 11, 2022 · Joined Apr 11, 2022. 3 Posts. Discussion starter · #1 · Apr 11, 2022. Hello, I got P0430 (catalyst efficiency below threshold) 2 days after the spark plug change. I changed the spark plugs but didn't change the coils. OBD2 scanner can't detect any misfires, but sometimes RPM is not constant at idle. Also, I observed a 25% decrease in MPG. =====Claim your FREE error code eraser 👉 https://free.nonda.co 👈== How to Fix P0430 Error Code ====Error Code P0430 Saving Repair ...

2014 F150 STX 5.0l - code P0430. I bought my F150 March '21. It had 136k on it. Five minutes after I left the lot, the TPMS light came on (not worried about changing sensors yet). About 5 months later engine light came on with a p0430 Catalytic Converter below efficiency on bank 2 (driver side). Had the CAT replaced which did not fix the issue.

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 …If you’re in the market for a Ford F150, you’re in luck. This popular truck is known for its durability, versatility, and impressive performance. Whether you need a powerful workho...Here's how to bypass or trick the O2 sensor into thinking your catalytic converter is working when you have the P0420/P0430 check engine light code. May or m... 2009 - 2014 Ford F150 - 2012 Ecoboost P0430 Again - I keep getting a P0430 error on the truck. I have replaced all 4 O2 sensors and the cat on bank 2(drivers) side. Jul 18, 2023 · 2015 - 2020 Ford F150 - Question about P0430 - Hi everyone! I have a 2018 3.5L truck with over 100K miles. The check engine light is on, indicating Code P0430. Is it possible that the catalytic converter has failed? General F150 Discussion - CVF catted down pipes throwing cel codes P0420 & P0430 - Just installed CVf catted down pipes was good for 2 days and now I’m getting 2 codes P0420 & P0430, have cat back exhaust, catch can, turbo inlet tubes AMS, catch can, cold air intake open element, and 5-star 93 performance tune for...A quick search for P0430 on the forum found some threads you should read through. ... P0430 “Relax, it's just a truck forum." Member #43 My Mods 2018 F150 Lariat 3.5L (213cid) Special Edition, Sport, 4x4, 36 gal., 157", 6.5' bed “There is no right way to do a wrong thing." Reactions: stereotype one. Save Share. Like. 1 - 2 of 2 Posts.What is the Cost to Diagnose the Code P0430 1997 Ford F150? Labor: 1.0. The cost to diagnose the P0430 1997 Ford F150 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.Property deeds show you who currently owns a parcel of real estate. To get a homeowner's name and determine who's on a property deed, you can contact the county tax assessor or you...

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General F150 Discussion - Help with a P0430 code? - Looking for some help. 2013 5.0 throwing bank 2 cat p0430 code. I’ve replaced the following: - new catalytic converter on driver side (bank 2). - All four 02 sensors. - All 8 spark plugs (spark plugs were only 20k miles old and looked horrible). I had gapped them too...Once the oil has been changed in a Ford F150, if the oil change indicator light on the dash does not reset on its own, then the light should be manually turned off by resetting the...16 Posts. #2 · Aug 19, 2020. You need to watch what the o2 sensors on bank 2 are doing when at operating temp. The upstream switches quickly the downstream switches slowly when the cat is working properly. When the cat is worn out rear o2 will switch quicker. Compare it to the reading on the other bank.2015 - 2020 Ford F150 - 2018 2.7eco P0420 P0430 Sulfur in gas - I have a 2018 2.7 with 48k on the clock. I recently started experiencing a intermittent P0430 code. Other than the code, the truck drives fine. I'm grateful that I still have a warranty and made an appointment to see the dealer. They are booking two...Dec 2, 2020 · Code P0430 Ford 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. 2009 - 2014 F150 - Help with P0430 code: driver's side CAT.. - Howdy Guys, Been fighting a P0430 for a few weeks now - Driver's side catalytic converter bank. After reading several post on this and other sites I troubleshooted in the following manner, from the lowest cost up: 1. replace all spark plugs. Clear code....Catalyst System Efficiency Below Threshold (Bank 1) is the meaning of the P0420 code. This code indicates that Catalyst System Efficiency (Bank 2) is below the threshold (P0430). The number one cylinder is located on the bank 1 side of the engine. In Bank 2, you will find the opposite side of the engine. P0420 and P0430 both showed up …2014 F150 5.0L XLT keeps popping P0430 Code - Help! Reply Subscribe . Thread Tools Search this Thread #1 07-01-2022, 11:25 PM RJtheEMT. 1st Gear. Thread Starter. Join Date: Jul 2022. Posts: 1 Likes: 0 Received 0 Likes on 0 Posts 2014 F150 5.0L XLT keeps popping P0430 Code - Help! ...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. It has 150,000Kms. Does anyone know what might be causing this? I...Key Takeaways. The P0430 code indicates a problem with the catalytic converter’s efficiency, which can cause symptoms like decreased engine performance and increased fuel consumption.; Possible causes of the code include faulty oxygen sensors, exhaust leaks, or issues with the air-fuel mixture.; Diagnosing the P0430 code may … ….

2015 - 2020 Ford F150 - P0430 and P0420 Fix - For those who have modifications, you will need to install Spark Plug Non-Foulers (18mm size) on rear 02 Sensors(5.0 engine). (Drill out foulers center hole with 1/2 Drill bit, does not have to be all the way through, drill fouler from the out side inward, enough for the...Sep 1, 2023 8:12 PM EDT. Catalytic converter. Kim2480 via Wikimedia Commons (CC BY-SA 3.0) Check Engine Light Codes P0420 and P0430. Replacing a catalytic converter or "cat" has become a big, expensive drain on a lot of people's budgets these days. I want to share some information about what's happening here with emissions testing and some …The rest of the exhaust looks new. 2015 - 2020 Ford F150 - 2019 2.7 Cat Converter Issues - I have a 2019 STX 2.7L with 131K miles that's already had three catalytic converters replaced. P0430 at 54K miles and again at 77K miles both replaced under warranty. P0420 replaced out of pocket at 116K miles and now looking at a CEL with a hard P0430 and...How to easily test any Catalytic Converter. Ill show you how I tested and replaced my catalytic converter on my 2014 f-150 with the 3.5 Ecoboost.Do not pay $...The average cubic yard of topsoil weighs 2,000 pounds, or 1 ton. Very dry topsoil can weigh as little as 1,700 pounds, whereas wet topsoil can weigh much more. Many half-ton pickup...Property deeds show you who currently owns a parcel of real estate. To get a homeowner's name and determine who's on a property deed, you can contact the county tax assessor or you...2012 F150 P0420 & P0430. Scotty-. I have a 2012 f150 with a 5.0 V8. 140,000 MI. Automatic transmission. The P0420 and P0430 codes have been intermittently going off and on for the last couple years. It seems to stay on all the time in the winter when it's cold but then will sporadically go off and on in the summer months.2015 - 2020 Ford F150 - Intermittent power loss, low RPM, followed with P0345 and P0349 - Hi, long time lurker. Scratching my head on the following issue and looking for some guidance, thank you. Issue: Intermittent power loss followed by P0345 and P0349 DTCs. Has happened on 4 occasions, 3 of the 4 were at altitude... P0430 f150, Thread Starter. Join Date: Nov 2011. Location: Charlotte, NC. Posts: 47. Likes: 2. Received 0 Likes on 0 Posts. Chasing a P0430 Code 2011 Ecoboost. New to the …, 2004 - 2008 Ford F150 - P0420 - replace cat or an O2? - Ok, a couple of days ago I got the CEL on pulled code it says P0420. No other codes pending or stored. I did some reading that said to look at the live data from the code reader to see about the O2 sensors., As such, an F-150’s catalytic converters could easily eclipse in expense compared to a Smart car. So, ... Diagnostic Trouble Code (DTC) P0430 indicates that the catalytic converter’s efficiency in bank 2 is below the threshold. The catalytic converter’s function is to eliminate or reduce harmful emissions, and it has a catalyst efficiency ..., It's a great time to buy a new home, largely because of low rates. But before you leap, remember this traditional advice. By clicking "TRY IT", I agree to receive newsletters and p..., Changed Bank 2 catalytic converter and P0430, Faulty Three-way Catalyst Converter Bank 2 is still present! This was not expected. Catalytic Converter-Direct Fit Left Eastern Mfg fits 06-08 Ford F-150 4.6L-V8 was ordered from e-bay $162 About a week later check engine light went out (was no longer illuminated) and has not returned for the past ..., I found it! Thanks! So it was apparently the flap inside the fuel fill. The dealer said its not uncommon this time of year with all of the crap on the roads. Thanks again! 2015 - 2020 Ford F150 - P0451 Code - Popped a P0451 code (EVAP switch) on …, 3.5L EcoBoost Engine - 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 Bank 2. Can anyone tell me: 1. Which side is Bank 2 (Driver/Passenger) . 2. What could be causing this code. 3. If it is the O2 sensor, which one..., 1999 to 2016 Super Duty - P0430 Code - Time for a new cat? - Truck (details in sig) threw a 430 code the other day. The generic meaning is Catalyst Efficiency Below Threshold - Bank 2. ... 2004 F-150 Code Issues - Running Rough Under Throttle. number20. 2004 - 2008 F150. 4. 06-24-2016 01:02 AM. 2002 E250 5.4 starts out running fine, crawling in ..., The cost to diagnose the P0430 2002 Ford F150 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., Tech Notes. 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 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 Three-way …, Lightning, Harley-Davidson F-150, Roush F-150 & Saleen F-150; 2015 + Expedition & Navigator; 2007 - 2014 Expedition & Navigator; 1997-2006 Expedition & Navigator; ... 2016 F150 Ecoboost 3.5 P0420 and P0430. poofyo101. 2015 - 2020 F150. 24. 04-16-2019 10:14 PM. Still major trouble. Graham1222. 1997-2006 Expedition & …, The Ford F150 P0430 Code is a Diagnostic Trouble Code (DTC) that indicates an issue with the efficiency of the catalytic converter in bank 2 of the engine. When this code is triggered, it means that the vehicle’s control module has detected that the catalytic converter is not working as efficiently as it should be., SOUND SHORE FUND INSTITUTIONAL CLASS- Performance charts including intraday, historical charts and prices and keydata. Indices Commodities Currencies Stocks, 2004 - 2008 Ford F150 - OBD Trouble Code P0430 - This is the only code coming up right now. Recent relevant history is that 3 weeks ago I changed out 8 old plugs that were in horrible shape (electrode worn down resulting in overgap) and causing truck to run rough and cough/spit at high rpm. Truck had 67k mi on it. 7..., The Ford F150 is one of the most popular and powerful trucks on the market. It has been a staple of American roads for decades, and its reputation for reliability and performance i..., If you’re in the market for a used Ford F150, you’ve come to the right place. Finding the best deals on used Ford F150s can be a daunting task, but with a little research and patie..., Discussion starter · #1 · Oct 5, 2017. New to the forum and I am chasing the cause of an 0430 code. Bank 2 Efficiency below threshold. I have the Torque Pro app on my phone and an ELM connected. First thing I did was check the voltage of the O2 downstream sensors. Bank 1 was steady., Apr 11, 2010 · 1999 to 2016 Super Duty - BOTH P0420 AND P0430 CODES - Hello all. I'm a new member. I just purchased a 2006 f-250 4x4 extended cab with a 5.4 triton. I bought this truck from the chicago area which is about 175 mile north of my home. , 2014 F150 5.0L XLT keeps popping P0430 Code - Help! Reply Subscribe . Thread Tools Search this Thread #1 07-01-2022, 11:25 PM RJtheEMT. 1st Gear. Thread Starter ..., Reply. 2004 - 2008 Ford F150 - trouble code p0420 &p0430 - 06 f250 5.4, truck is throwin these codes and truck has really rough idle and a bad mis. My cats do sound like they are leaking but could it cause the mis? It seemed to have just a little mis at idle at first but all the saddened last night it got a lot worse., A Ford F150’s fuel tank capacity varies between 23 and 36 gallons depending on whether or not the purchased vehicle is standard or extended range. The Ford F150’s cab style also af..., Dec 9, 2022 · 2015 - 2020 Ford F150 - 2018 2.7eco P0420 P0430 Sulfur in gas - I have a 2018 2.7 with 48k on the clock. I recently started experiencing a intermittent P0430 code. Other than the code, the truck drives fine. I'm grateful that I still have a warranty and made an appointment to see the dealer. They are booking two... , 2004 - 2008 Ford F150 - 05 5.4l Runs great Code P0430 Help! - Accidentally bought an 05 F150 Lariate at auction. 5.4l with 172k. Pretty clean and ran great. No repair history. Put some Berryman's infector clean in and filled tank. After 80 mi. CEL comes on P0430. I've changed oil 5-30 synth blend, sparkplugs..., P0420, P0430. Jump to Latest Follow Status Not open for further replies. 1 - 20 of 30 Posts ... F150Ecoboost.net is the best Ford F150 Ecoboost Forum with discussions on 2011+ F150 Ecoboost Trucks. Discuss performance mods, towing questions, wheels, tires, lift kits, and much more!, Bank one is the side of your F150’s engine with the first 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 2 version of this code is P0430., I keep getting a P0430 code on my '12 F-150 ecoboost with 110,000 miles on it. Here is the entire code: P0430 Catalyst System Efficiency Below Threshold Bank 2 ... F150Ecoboost.net is the best Ford F150 Ecoboost Forum with discussions on 2011+ F150 Ecoboost Trucks. Discuss performance mods, towing questions, wheels, tires, lift kits, …, Getting the p0430 code. Checked Pre/Post cat temps, both cat's registered about a 40-50 degree jump. Ran a graph using forscan on Bank 1 vs Bank 2, but I'm not …, Dec 2, 2014 · 2004 - 2008 Ford F150 - 2004 F150 5.4L 4WD P0430 code - So I was driving home tonight in rush hour traffic cruising about 55 and I got a check engine light. No change in performance, no misfire, no rough idle, nothing but the light. Went by AutoZone to have the code read, turns out P0430 bank 2 cat issue. Any ideas... , The P0420 code in a Ford F150 is often triggered by a malfunctioning catalytic converter. The catalytic converter plays a crucial role in reducing harmful emissions from the exhaust gases. If it fails to properly convert the exhaust gases, it can trigger the P0420 code. A faulty catalytic converter may need to be replaced., Causes Causes of the OBD-II code P0430. 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 ..., 2009 - 2014 Ford F150 - 2012 Ecoboost P0430 Again - I keep getting a P0430 error on the truck. I have replaced all 4 O2 sensors and the cat on bank 2(drivers) side. , For More Info visit us at: http://1aau.to/h/cvP/Is your Check Engine Light on? The trouble code P0430 suggests there might be a problem with your catalytic c..., The 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 …