P0430 maf It was EGR cleaning via plenium, MAF Jun 14, 2016 · I had the P0420/P0430 codes come up after installing a high flow Magnaflow cat bat exhaust system. 5-MAF Cleaner Oct 22, 2024 · Today’s automotive pollution control systems are highly complex; catalytic converters are only part of the solution. 00. Table of Contents P0430 - Catalyst System Efficiency Below Threshold Bank 2 Now this code appeared once months ago when I pushed the car to about 6k rpm on an on-ramp. It’s possible, and probably likely, that the code is not saying “replace MAF” or “replace O2”, but rather it is saying something like “car is running lean” (I. 1 2. 2 days later, P0430. Fuel trim values were small. 41V with 4kg/h and Air mass = 1. Could be anything from low fuel pressure, bad spark plugs, bad coils, bad injectors, bad O2 sensors, wiring problems, rodent damage, bad MAF sensor, clogged air filter, dirty throttle Dec 5, 2023 · • Got P0420 and P0430 codes again- Replaced MAF Sensor again with OE part and Fuel Pump again with OE part because it had actually fallen apart in my tank and stopped working • Had Nissan clear all self learn from ECM and complete Idle Relearn. After reading a bunch of threads on the topic, I addressed these basic items first: air filter, spark plugs, and cleaning the MAF sensor. Feb 6, 2022 · It had P0430 and a bunch of EVAP codes when I got it. P0430 diagnostic trouble code details. I am trying to see if cleaning the MAF sensors would remedy these codes. 1 g/sec MAF Sensor Voltage at engine on is 1. P0420 and P0430 literally mean the computer is adding fuel to compensate for a higher oxygen content detected by the o2 sensors, either from bad converters or from an intake leak adding oxygen after the mass air flow sensor. started with 4 new denso O2 sensors, maf, had a shop replace cats, installed new fuel pump and filter, new plugs and coils, head gaskets, heater tees, hoses and Jun 11, 2011 · Surprisingly, a slowly dying MAF sensor can cause P0420/0430 and secondary O2 codes. Oct 5, 2017 · Don't drink the Kool-Aid --- Current: 2019 F150 3. I pulled the MAF sensor and cleaned it with MAF cleaner. Let dry completely before re-installing. Long term 2 - 3% short term 1 - 7%. The dealer did some tests and replaced the plugs last week. Jan 5, 2022 · In our Corolla and Camry we used to have a 0420 problem before sticker renewal time. It covers the P0430 code's meaning, symptoms, causes, and possible solutions. 000, Minimum 0. your cat is toasted. Both P0420 and P0430 still re-appeared. P0430 is the ecu not getting the correct difference between the upstream and downstream o2 sensors, generally meaning the cats are dirty and not working efficiently any more. 2 Oct 29, 2021 · The exact repair method may vary according to the type of vehicle, but in general, the fix for a P0430 on a Ford will be pretty much the same as the fix for a Chevy or Nissan. And then used Seafoam engine cleaner. Any DTC or condition that increases emissions or affects sensor readings can cause a converter to fail the ECM tests even if the converter is good. Fuel trim off OBD live data: STFT1 good STFT2 good LTFT1 NOT good = 13. " So the car has been losing power. Hovered around 91C at highway cruise. Does this mean I need cali compliant exhaust? 06 lc. Feb 19, 2022 · My gut feeling is that the MAF Sensor has been slowly failing for 10's of thousands of miles now, resulting in the variety of codes. All around the butterfly it was coated in black, gooey tar like crud. Have you been driving the car with a misfire - this is the most common way to kill your cat? The test compares the output from the front and rear lambda sensors to calculate the cat efficiency. May 28, 2019 · Hi, I have P0420 and P0430 in my Lexus RX400h (2008). P0420 and P0430 codes are symptoms, not the root cause. Sep 19, 2013 · minutes. Still P0430. Sep 11, 2023 · Might want to check if the maf housing is matched to the maf sensor and- the sensor is matched to your injector size. Ford as well as a couple shops just look at code and say, we'll, you need new cats and o2 sensors. Car worked superbly. What is P0420 Audi Fault Code, Cause And How To Fix? Warning! pay attention to these bad maf sensor symptoms P0420 code: causes, symptoms and how to fix What is p0420 audi fault code, cause and how to fix? Cleaning your mass air flow (maf) sensor: how & why Nov 10, 2022 · Codes read: P0430, P0420, C1201, C1223, C1241, and P0057. Aug 21, 2024 · Maintenance Shop - 2020 f150 5. Jan 14, 2019 · whether its bad 02 sensors or bad cats - is still triggering the P0420 and P0430 codes a few months after the MAF cleaning. Was replaced 2 years ago. Replaced the cats since it was rattling. No cheap substitutes, can cause misfires. Apr 14, 2015 · Neither P0171 or P0430 are directly linked to the MAF sensor. The difference between cat temperature on both banks is more than 160C (320F). The weather is cold. MAF was replaced after cleaning failed to fix it, codes cleared. Feb 3, 2011 · Re: P0430 Code Toyota of Costa Mesa Good news. La Oct 5, 2017 · 2011+ Engine Related Questions - Chasing a P0430 Code 2011 Ecoboost - New to the forum and I am chasing the cause of an 0430 code. I did Oct 31, 2023 · Vw mass air flow sensor problems The real cause of p0420/p0430 dtcs. 1) Moved O2 sensors from one side to the other - Still get P0430 code. I recently replaced my original MAF in my '02 with the updated AM600 MAF and my constant P0430 and secondary O2 codes at first stopped coming back as quickly, now haven't had any in more than a week and 500+ miles of driving. I used to clear it, Seafoam (optional), run one tank with Techron. Oct 31, 2019 · 1) Moved O2 sensors from one side to the other - Still get P0430 code. 3K views 30 replies 7 participants last post by Revving455 Jan 17, 2025 Feb 2, 2010 · 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 filter, etc. ” You’ll get the P0430 error regardless of whether your converter is operating at 80% efficiency or 5% efficiency. (Coincidence?) I'm at 205000, I just did CCV and a new MAF (Delphi though. May 30, 2013 · Cleaned the MAF with cleaner rated for a MAF. Let dry of condensation before re-installing. 10 miles later I have a code for P0420 and a pending code P0430. P0430 - Generic; MAP input 25-80 kPa, MAF input 15-100 g/sec, May 18, 2021 · Clean MAF. Cleaned the throttle body with proper cleaner. Reset codes. New boots and everything was perfect again. P0420 code – meaning, causes, symptoms (& how to fix) Can a dirty maf sensor cause car engine problems? Why am i getting p0420 and p0430 code at the same time? cause & fixes. It’s not unusual to have a catalytic converter-related code accompanied by an oxygen or mass air flow (MAF) sensor issue. Should we start by replacing MAF (acceptable brand?), plugs, etc? Run a bottle of cat cleaner through it and see what it does? Just jump straight to swapping out the (2, I believe) upper cats? something else? Jun 6, 2018 · What is a Mass Air Flow (MAF) Sensor? The Mass Air Flow (MAF) sensor measures the amount of air that enters the intake system of the internal combustion engine. Items bought 1-O2 and Air/fuel sensors 2-Ruthenium Spark Plugs 3-Coil Packs / 3 4- CRC GDI IVD Intake Valve & Turbo Cleaner 11 OZ. Changed plugs and air filter. It can happen for several reasons and may warn through different symptoms. My only experience with MAF''s is from when I had a MG ZT diesel. Aug 20, 2024 · OBD-II Diagnostic Trouble Code P0430: Catalyst System Efficiency Below Threshold (Bank 2) The P0430 code indicates that the catalytic converter on bank 2 of the engine is operating below the required efficiency threshold. I just barely bought it from a small dealer and had a check engine light come on for the cats. When the MAF sensor sends a higher-than-expected voltage signal , it disrupts this balance, leading to potential issues such as engine misfires, stalling, or Apr 10, 2017 · 1999 - 2016 Super Duty - P0420 and P0430 - Hello all, new to the site. 4 new GM O2 sensors. On an 02 Camry I discovered both boots going to the throttle body and MAF sensor box had cracks on the bottoms of them. Spark plugs New/Clean; Spark plug tubes oil free. I reset it then next day I let it idle again for a little and now I see p0430, p0171 and p0174. Only show this user Jan 8, 2024 · P0104 code: mass air flow (maf) “a” circuit intermittent / erratic. (P0420 and 0430) I have spoke with the dealer and he assured me that he would replace the Sep 27, 2015 · Codes - P0420, P0430 Did have one for MAF sensor but cleaned it, cleared codes with OBDII tool, and even left battery unhooked for about 30 minutes. 5L with p0420. thstone I am not sure how I could check for exhaust or intake leak - Will google that. separate P0420 and P0430 codes for either one or both sides. I suspected the cat was shot, but holding out hope. It's possible your whole problem is a dirty MAF. However, the P0102 may very well be the underlying cause of the P0430. Jan 6, 2018 · MAF has been cleaned and plugs have been changed. I fitted a black box with the suggested pieburhg MAF unit. ) The ECM isn't seeing enough of a difference in reading between the primary and secondary sensor so it set a code for cat efficiency. 3 LTFT2 NOT good = 7. Table of Contents Jan 18, 2020 · P0430 is a code for cat efficiency bank 2, and bank 2 is the driver's side on these engines (furthest cylinder forward which is #1 is passenger side. 0 fx4 code po430 - So have this code popped up. Not knowing what to do next, I talked to my mechanic, who is an American that works on base at the Auto Skills Center and he suggested I clean the Mass Air Flow Sensor. Spray the unit throughly, at least 1/2 a can of the MAF Cleaner. Apr 14, 2022 · Gas mileage was fine. Dec 16, 2024 · P0430 catalytic converter Jump to Latest 1. Apr 22, 2009 · I was driving with a bad maf for a while and eventually got a new one. I Grab a can of carb cleaner and spray around your intake components and see if the RPM's rise. Bank Jun 18, 2021 · Cleaning Your Mass Air Flow Sensor Is a Beginner To Intermediate Job for Most DIYers. 8 --> Go to 0 immediately @ 2500RPM<-- The P0430 diagnostic trouble code is generic, meaning it can appear on any vehicle type. Nov 12, 2009 · P0430 Catalyst Efficiency Low Fault Bank B Those are the only 2. I accidently was using an 80mm housing with a 90mm lightning sensor with 24lb injectors and it was coding hard. A P0430 diagnostic code indicates catalyst system efficiency issues. Failed air/fuel ratio sensors, mass air flow sensors, or other sensors can affect the engine’s fuel and air mixture. Now it seems nearly as common as P0101. NOTE: The fine sensor wires inside the old MAF looked noticeably crusty and tired compared to the pristinely clean wires in the new MAF. I bought it about a year ago, since then done brakes, timing belt, water pump, replaced all fluids. If P0430 is the only code then suspect cat losing efficiency. I hope this is the end of the issue. Same code. Often times, an internal air temperature (IAT) sensor is also installed within the MAF Sep 26, 2022 · It has random misfires on all cylinders when idling, and the check engine light starts flashing when I get around 2. Joined Oct 4, 2007 · 1,358 Posts #21 · Sep 11, 2017. Nov 13, 2008 · Cleaned the MAF sensor, and now runs great - but still shows P0430 - I am considering replacing O2 sensors - however my question is - can the use of the injector cleaner cause this code until all of the injector cleaner is run thru the system? Nov 3, 2024 · I have been getting P0420/P0430 codes for about the last 6 months, on and off. LOGS ON PG1 WERE DONE WITH THIS MAF. 2nd, plugged EGR ports under the small cover of the upper intake manifold and cause the problem. Monitors set for me usually within same day. Cleaned throttle body and MAF sensor while at it. The Take-Away From This Article. Dirty MAF sensor, CAM sensor, Crank Sensor signal trouble, even intermittent can cause problems, cracked plug tube oil seals. This allows air in after the MAF and codes for sensors are thrown. but I want to address CEL/VSC, etc lights. There are a lot of things that could cause it that don't require you to buy any parts (or at least buy parts that are cheaper than a cat) - vacuum leak, dirty/bad MAF sensor, bad ground, stuck fuel injector, stuck/bad idle control valve, dirty/bad O2 sensor, and so on. Codes kept reappearing, a few months went by, rarely driving it. 5 Ecoboost 4x4 Platinum Screw 3. Never know how long it takes. Fuel quality issues, such as using the wrong type of fuel or contaminated fuel. I am sure it has the OEM exhaust manifolds. After searching here and reading threads I realize it could be the cat, but wondered if going ahead and replacing the downstream sensor as a first step made any sense. May 25, 2015 · 1) Moved O2 sensors from one side to the other - Still get P0430 code. P0430 OBD Trouble Code. I would say that over 80% of the conclusions pointed to a bad Cat, maybe 10% to a bad sensor, and the remaining 10% to exhaust leaks and other minor issues. Runs flawlessly. This might be due to a worn-out catalytic converter, but it could also be a sensor issue or a leak in the exhaust. The rest of the causes listed are probably best investigated by your service department with a CONSULT scan tool. The P0430 code indicates the catalyst is underperforming, generating a “not ready” status and an automatic failure. 50 starts to impact the wallet after awhile! Feb 4, 2019 · MAF 1- This is the ~1500 mile old one from FCP euro . These two codes came back. The upstream sensor does not directly lead to P0430 being thrown. Usually comes back at less than 10 miles. But the O2 Monitor check shows B1 S2 Fail. Guy at muffler shop scanned codes before making any repairs and was now showing P0430 and P0420. I'd bet that the cat codes are side-effects of the MAF sensor problem. Vacuum leaks after the MAF sensor wreak havoc on the signals and the sensors can appear faulty when they are not. A problem upstream from the cats will lead to them being ruined or damaged or if you are lucky just the code being thrown. Up and down stream bank 1 and 2-Cleaned Mass air flow sensor-Replaced cat bank 2 for P0430-Replaced PCV valve-also ran fuel system cleaner Nov 28, 2023 · MAF: 7. Reset fault codes and if issue occurs again vehicle will need the front and rear catalytic converter replaced. With this being my first import and aspirated vehicle, everything is pretty foreign to me still so I am just trying to figure out the best way to go about cleaning these sensors. I am no expert but from searching it seems the only thing abnormal is the 2 items: Short Term Fuel Trim Bank 1-Sensor 2(%)N/A Short Term Fuel Trim Bank 2-Sensor 2(%)99. Runs fine until P0420 and P0430 codes pop then it runs like crap. Use a "Throttle body/intake" cleaner that contains no alcohol of any kind, and I prefer the CRC brand of the Mass Air Flow Sensor cleaner. The MAF seemed pretty clean, but the throttle body was in bad shape. The MAF is a hair-thin wire which could be easily damaged by using q-tips on it, I would not recommend that. This is the type you insert a tube into your rubber boot and have he nozzle placed just forward of your butterfly Nov 21, 2019 · Just purchased a one owner, very clean 04 Titan with 204,000 miles. However, it shows there’s a problem with the emission system. Truck drove well for ~85 miles then it threw a MAF code and the P0430. The cat is to be installed tomorrow. A P0430 diagnostic trouble code (DTC) might piggyback on other DTCs, like P0171, P0172, P0174, and P0175. I havent run into these before -- I am leaning towards the MAF, but with those codes it might be any number of the engine temp, TPS, etc sensors Jun 8, 2017 · MAF Airflow has been replaced, clean air filter. 4V which comes down on 1. Also, it's been burning through gas like it's priced at $. Oct 31, 2016 · That looks like a Hewitt SAIS delete kit. I also replaced the air filter and it's still cropping up. Dec 14, 2015 · The MAF seemed to working OK in that it was reporting low values when the engine was idling and high values when the engine was working hard. Mar 17, 2010 · If the downstream sensor is giving incorrect data, then the PCM could incorrectly jump to this conclusion and throw P0430. How to diagnose P0430? Diagnosing P0430 requires a combination of visual inspection, functional tests, and data analysis. There are multiple types. Jan 2, 2024 · How to diagnose p0420 or p0430Maf intermittent erratic carparts The real cause of p0420/p0430 dtcsVw mass air flow sensor problems. Codes disappeared for 2-3 months and now I am getting P0430, P0420, C1201 codes once every 1-2 weeks. 3. P0430 came back on after about 100 miles. Oct 2, 2023 · The P0430 code specifically indicates an efficiency problem has been detected with the catalytic converter in Bank 2 of the exhaust system. This summer I got the P0430 code, took it to the Porsche dealer since it was real close when I lved in Germany. Jul 10, 2012 · Greetings, I have a 2005 GX470 with 105k. Cleared it. 3) Driver side sensor: Passenger side sensor: 4) Remove the sensor you wish to work on. The driver side is bank 1 and gives the P0420. 2) Just cleaned MAF sensor yesterday - waiting to see if code will pop up again. Jump to Latest 21 - 24 of 24 Posts. Check for any fault codes. DIY Difficulty Level: Beginner to Intermediate, depending on how easy or difficult it is to reach and remove the mass air flow sensor on your particular vehicle. His is throwing p0420, p0430 as well. If you’re working with an older Subaru, replacing the upstream sensor might solve the problem. 50/gallon! 33 gallons twice a week at $3. Are your cats factory original or replacements? Or are they missing entirely? Feb 13, 2023 · I am still getting the P0420-00 & P0430-00 codes "Catalyst System Efficiency Below Threshold". dont use any other cleaners or risk damage. Mar 9, 2007 · My '06 V8 service manual says that P0102 is a problem with the Mass Air Flow (MAF) sensor. not letting in any unmetered air after the MAF0. They told me today that the Cat is defective and that they will replace it free under warranty. Jun 5, 2018 · P0430 code O2 sensor info off OBD live data: B1S1 good B1S2 good B2S1 good B2S2 NOT good = fluctuates from 0. Why Am I Getting P0420 And P0430 Code At The Same Time? Cause & Fixes. Mar 14, 2014 · When your vehicle throws a P0420 or P0430 code, it’s telling you there’s a problem with the catalytic converter’s efficiency. Flood that side with MAF cleaner, just don't contact the wires. Is it correct to assume a bad MAF would affect both sides. The same P0430 code appeared after about 5 days(I have a Scangage). That's why a problem with it can manifest itself in many different ways. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. 90-3. At first, I replaced the 2 Pre Cat O2 sensors, then the Post Cat O2 sensor and then clean the MAF. These are the obvious causes. 50 miles later and armed with a Durametric, the fault code returned along with P1128 and P1130- Oxygen sensing adaptation idle range bank 1 and 2. BTW temps never exceeded 94C and that was only sitting at idle after driving for a while. Exhaust leak - I could not hear any different noise. The hard tube that stays connected to the air box lid houses the MAF sensor. He said that perhaps when I oiled my K&N Air Filter prior to all this beginning, I might have over oiled the filter and some oil particles could have make the MAF sensor Mar 20, 2022 · However, causes can be vacuum leaks, especially the air intake hose that plagues the Pilot, look for deteriorated hose. Most states have readiness monitors that must show the catalyst system is working properly. They cleared it and said no big deal unless it comes back. This article provides a comprehensive analysis of the P0430 code, including its implications, diagnosis, and repair options. nevadaesh · Premium Member. Mostly P0420, a few P0430, and on one occasion, both. 14. Not always…but a proper diagnosis will be much cheaper than throwing cats on a truck without diagnosing first. 3g/s. So my initial excitement over my "fix" was a bit overblown as it turns out. I replaced MAF sensor already to brand new. Remove. (Minimum Sensor Voltage, measure 1. I did start the X without the MAF sensor plugged in so the codes Dec 19, 2013 · I'm getting a p0430, and am noticing significant oil residue built up on the bank 2 heat shield. 5-3k rpm. I recently replaced the crank/cam sensors, the spark plugs and the coils. Replace every 100k miles. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. 2. In my case, I was attempting the test of the non-foulers on the bank 2 sensor. Learn possible causes, symptoms, and troubleshooting tips for P0430. After new cats were welded on, codes were cleared. Brake and throttle body cleaners will melt the plastic. It's located along the air intake duct. Spark plugs New/Clean. 15 g/s. Therefore, a P0430 code Ford and P0430 Lexus code mean the same thing. Clean MAF see if MAF reading is above 22 g/s at 54% engine load and if fuel trims come down closer to 0%. Sep 6, 2024 · Finding the reasons behind the P0430 code usually involves looking at a few key areas: oxygen sensors, ignition misfires, fuel injectors, exhaust leaks, and the catalytic converter. Dec 3, 2024 · There’s one notable exception: older Subarus. P0430 code. Jun 23, 2022 · 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). Jun 4, 2021 · CRC SensorKleen. May 1, 2024 · Code P0420 & P0430 and Catalyst System Efficiency Below Threshold Explained. Also, note the little "matchstick head" shaped thing isn't the MAF, that is a temperature sensor which is located in the housing beside it. A Mass Air Flow Sensor costs $100 and $400 and you can expect the labor costs to be $40 to $150. Looked prestine. This fix might also work for a P0430 on a Lexus GS300, a P0430 on a Toyota 4Runner, or a Honda Odyssey P0430. Mar 7, 2013 · Hello, I have a 2001 Maxima GLE with 127K miles. @ 2500RPM it becomes worse and fluctuates all over the place rapidly. Stall due to dirty maf sensor8 symptoms of a bad mass air flow (maf) sensor, location & replacement cost P0420 code is a diagnostic trouble code that appears on vehiclesP0420 code: catalyst system efficiency below Oct 3, 2007 · maf p0171 p0430. Jul 30, 2023 · The P0430 code means your car’s exhaust system isn’t cleaning up pollution as well as it should on one side of the engine. Feb 16, 2017 · So I've got the P0430 after changing the Thermostat to OEM from an aftermarket one. Given it is on intake path, I assume a faulty MAF should trigger errors on both Bank 1 and 2, not just bank2. Mass Air Flow (MAF Mar 12, 2015 · If you are dead set against using the o2 spacer fix then you should just go ahead and swap the cats and o2 sensors out. Sep 7, 2024 · The real cause of p0420/p0430 dtcsCan a dirty mass air flow sensor cause misfire?. 000, Min 0. typically good for domestic vehicles but was disappointed to see this one was Made in China, will go VDO next time), new thermostat, and new upstream O2 sensors (Bosch OE). Run a scan tool and watch the upstream & downstream O2 sensors in real-time, they confirm the lean state, but otherwise everything appears normal. 2001 GMC Yukon XL MAF Sensor & Catalytic Converter Issues Mass air flow sensor, filter,… my cat has like 220000 km so like 140000miles. All the excess MAF sensor cleaner eventually evaporated from the shop cloth with no visible residue and only a slight odour. Jun 19, 2019 · My scan tool shows a P0430 Bank 2 issue. com. Different gas did not solve the problem (I always use 87 top-tier brand gas at mile-high altitude). Jan 7, 2023 · P0430 – Catalyst System Efficiency Below Threshold (Bank 2) What Does the P0430 Code Mean? Code P0430 means that the downstream oxygen sensor from the catalytic converter on bank 2 detects the cat isn’t operating to efficiency standards, based on factory specifications. 2 days later, P0420. MAF Sensor Replacement Cost. Found fault codes 28A2 Mass Air Flow Boot. Light came back at 50 miles. After the plugs and coils were changed, the codes went away, but now (less than 1K mi. According to our mechanic, “Generally, this code means that you need a new catalytic converter. 000, Max 0. Dec 5, 2024 · car seems to run great, but just got a check engine light. With a P0430 or P0420 it will inhibit any other catalyst monitors or rationality Dec 22, 2024 · 2015 - 2020 Ford F150 - P0430 fix - Just thought i would share my fix for P0430 code on my 2016 F150 ecoboost. Bank 2 refers to the side of the engine that does not contain cylinder #1. Sep 15, 2018 · This page is meant to help you troubleshoot the Ford Mustang P0430 trouble code. Oct 17, 2024 · Checked for codes when I got home and it was P0430 (cat sys efficiency below threshold bank 2). CEL came back on, and here we are today. When your car’s computer detects an issue with the catalytic converter, the “Catalyst system efficiency below threshold” code is triggered. As a result, be sure the diagnosis covers all potential causes. Jun 30, 2013 · Have the MAF sensor checked as well. 86 g/s SHRTFTB1S2: 763% If I understand it correctly, odyssey only have bank 1 and bank 2, and the short term and long term fuel trims for both bank are all Feb 10, 2019 · Clean the Mass Airflow Sensor (MAF). no in depth checking or anything. Sep 1, 2023 · Only use MAF cleaner on something as important as that sensor. The check engine light would actually go out if I drove the truck hard but come back when driving light footed. I was getting p0430 and p0420. I did not feel like dropping the cash to replace the headers/cats, so I tried the sparkplug non-fouler trick and that has stopped the codes from returning. ) the P0430 (Bank 2) is back. With CRC Electronic Cleaner or MAF Cleaner, spray a few short bursts directly into the visible electrodes (no soaking). Use NGK Laser Iridiums. P0420 and P0430. No lights return and vehicle drove fine. P0420 and P0430 are complaints about the catalytic converter working inefficiently. 05-3. O2 sensors are probably original, as are A general rule of thumb when replacing catalytic converters is either go oem or larger if possible. After driving it for almost 1000 miles the Service engine light comes on. Generally, a P0430 means the same thing as a Sep 14, 2018 · This page is meant to help you troubleshoot the Chevy Tahoe P0430 trouble code. 4 results found. Nov 13, 2018 · This page is meant to help you troubleshoot the Nissan Murano P0430 trouble code. MAF and upstream O2 sensor recently May 6, 2024 · The Mass Air Flow (MAF) sensor monitors the air volume entering the engine’s intake manifold, allowing the Engine Control Unit to adjust the air-fuel mixture for optimal performance. Mostly stayed at 3. Did not drive car more than 10 miles after the ECU fried. A “lazy” upstream oxygen sensor can produce false P0420 or P0430 codes on these models. codes are P0420 (2x) and P0430. For 01 ody, same procedure but never had to Seafoam. Jul 29, 2023 · FIX: Change MAF (mass airflow sensor) 1997 Mazda Protege DX 1. 55 - Xdi60, Spd Exhaust, Whipple Intercooler, Stifflers Traction Bars, and E85 Feb 6, 2017 · P0430. Sep 1, 2014 · So I have searched far and wide on m3forums, zhpmafia, e46fanatics, and bimmerforums for information on throwing both p0420 and p0430 at the same time. Bank 1 was steady. Dec 10, 2021 · Next, a scan tool check. too much air, not enough fuel) or “car is running rich” (too much fuel/not enough air), and the mechanic is throwing parts at it hoping to fix it. I have read just about every thread on here about the p0430 code. I can't clear the lights. Get CRC MAF cleaner, there are video's online of how to use it properly. We’ll try to help you keep an open mind about this by going through other possible root causes of the problem: I’m getting Codes: P0420, P0430, P0504, C1201, C1223 and C1246 Toyota FJ Cruiser. Feb 25, 2019 · CEL code constant P0430 Intermittent P0420 The fact that it is giving intermittent P0420 seems to tell me it is something other than the cat. 3) Recently changed air/oil seperator. 10 faulty mass air flow sensor symptoms – mechanic timesP0420 code: catalyst system efficiency below threshold (bank 1) Sector111's tasty innovations blog: have you inspected your maf lately?Why am i getting p0420 and p0430 code at the same time? cause & fixes. Im thinkin your bank 2 converter is prob not workin as good. Oct 8, 2014 · P0228 is throttle position sensor/switch (it's shorted to PCM) that will trigger a P0420/P0430 code. Start by checking the downstream oxygen sensor since a problem there can cause incorrect readings about the converter’s efficiency. It did this 5-6 times. Oct 12, 2011 · I got some cleaner for the MAF and the throttle body this afternoon and took it all apart and cleaned both. I replaced both A/F sensors as well as both O2 sensors but the codes kept coming back. Mar 30, 2016 · P0430 is usually associated with another problem. As soon as I put the new maf on i got a CEL for p0420 Catalyst system efficiency below threshold (bank1). unplug/remove, using CRC Electronic Cleaner or MAF Cleaner, spray a few short bursts directly into the electrodes to remove dust particles (no soaking). Dec 25, 2021 · Next step, I replaced Bank 2 Pre catalytic Air fuel ratio sensor (up stream Denso 234-9042), and both bank 1 and bank 2 post O2 sensor (down stream Denso 234-4064 and 234-4261) with Denso part. Jan 31, 2024 · The P0430 code will often cause a vehicle to fail an emissions or smog check inspection. I Dec 23, 2024 · Looking for help. Sep 24, 2008 · Not trying to burst your bubble here but if your setting a P0430 code yes all those things could be causing issues but it would also set a P0420 bank 1 as well as the p0430 bank 2 codes. 27CE Oil Level Sensor fault. My 2012 has 126K on it right now. Aug 1, 2012 · MAF Sensor Voltage at ignition (engine off) is 0. DTCSearch. No blockages in the intake tubes P0430 Catalyst System Efficiency below threshold (bank2) Any thoughts. Gap a tad bit wide. Items replaced or cleaned to date-All 4 Oxygen sensors. Still-cleaning that MAF sensor and driving it a bit before the emissions inspection has done the trick for me. It’ll read, “Catalyst System Efficiency Below Threshold (Bank 2). Mar 29, 2022 · Check engine light for codes P0420 and P0430: Catalyst System Efficiency Below Threshold Bank 1 or Bank 2; Exhaust smells like rotten eggs; Rough running engine; Slower acceleration; Engine misfire ; Steps for Diagnosing Codes P0420 and P0430: Catalyst System Efficiency Below Threshold Bank 1 or Bank 2 Inspect the Air Intake System Parts The rest of the stuff you're considering won't help a P0420/P0430 code at all, but won't hurt anything if done properly. I also replaced coolant temperature sensor and PCV too, and cleaned the MAF sensor. My car didn't like the MAF so I put a new original BMW unit in. 3L V6 1500 and drove it home, was talking to family and let it idle a bit then got a p0430 code. So, I would postpone the blame on the O2 sensors. Anything to do with a MAF unit the only response is to replace with Original Equipment. Using Torque app, these are the current codes: P0193 Fuel Rail Pressure Sensor Circuit High Input Jan 11, 2021 · And if the K&N filter is oiled (which they usually are) then some of that oil works its way onto the MAF sensor, which is just downstream of the air filter. And you're 100% correct, the probability of three MAF sensors "going bad" in the same vehicle within a very short period of time is astronomically small. I went back to the dealer requesting my O2 sensors changed. I got lucky The p0101 (Mass Air Flow (MAF) Circuit Range/Performance Problem) is a recent one. MAF 2- The one that came with the car, possibly original. Jul 26, 2010 · Learn how a failing mass air flow sensor can lead to catalytic converter issues in your 2001 GMC Yukon XL. Oct 10, 2018 · MAF is upstream from all other systems in the mixture/combustion/emission systems. Mar 2, 2023 · Clean or Replace the MAF sensor if faulty or repair the wirings. 090, Fail). 4 g/sec From the reading above, and the images, can someone help me to diagnose how to test if the MAF sensor is functioning fine. These codes translate to “Catalyst System Efficiency Below Threshold” for Bank 1 or Bank 2. 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. That's one reason MAF is the first thing that comes to mind - although at times maybe it comes to mind too readily! Jul 16, 2011 · The shop obd2 reader was originally only picking up the P0430 cat code. O2 sensors seem to work, and given the correlated values of the sensors readings between two banks. I clear them and they come back. 8 intermittently. Mar 10, 2008 · Bad Gas can cause that code to appear so you might want to consider resetting it and see if it returns. I have the Torque Pro app on my phone and an ELM connected. If you've determined there are no intake air leaks in front of the MAF, check for exhaust leaks between the A/F sensor and primary cat. I then replaced all O2’s and spark plugs with Bosch brand parts. Table of Contents. Clean MAF, then check the intake tubing and make sure all connections are tight (i. 2 to 0. I cleared between each fix and continued to drive it around. Due to the price, many people opt to go with an aftermarket one and are soon haunted by the infamous p0420/p0430. The average MAF sensor replacement cost is between $140 and $550, depending on the car model and labor costs. Could you tell me how to check O2 sensors. Thought I had it beat. Jan 27, 2023 · MAF reading may be low for 54% engine load. First to verify the presence of the P0420 and/or P0430 DTCs but to also check for any others that might be recorded in the ECM. Jun 26, 2023 · All that for tuning up your engine. The real cause of p0420 You need to troubleshoot the cause of the P0430, or have a competent mechanic do it. Is it fair to assume there's an intake or vacuum leak somewhere? Apr 2, 2022 · Keep in mind this is on the driver's side. Them Ruthenium Sparks are awesome! And the MAF well that I think I got a defective one and was turned back Just cleaned the one with MAF cleaner. Those are notorious for getting dirty and sending false readings on air flow and air temperature to the ECM, which in turn makes the care run lousy and could potentially trigger the P0420 and P0430 codes at the same time. My tuner found my mistake and corrected it. Apr 2, 2015 · My thoughts: MAF sensor unlikely bad. Oct 2, 2017 · P0430 - Catalyst efficiency below normal; P0340 - Camshaft position sensor circuit malfunction; I'm assuming the first three are related and the last is a separate issue. Bank 2 Efficiency below threshold. Cleaned the throttle body, new MAP and MAF sensors, new thermostat (was sticking), fluids etc. I had a broken MAF sensor trigger P0430 and P0420 codes Ok, the P0102 is a very straight forward code pointing to a fault with the Mass Air Flow (MAF) Sensor. The P0442 small evap leak not the cause of P0430 Jul 17, 2018 · I kept getting those codes for about 6 months along with P1128/P1130 and a few others as well. Jun 15, 2016 · So during the past year I have done quite a bit of research on this forum, YouTube videos and multiple other forums regarding p0430/0420 errors. I cleaned all of that out and made sure it was in good shape before putting it all back together. I had to replace my O2 sensors as well. I changed out the O2 sensor in bank 2, sensor 1 and the code(s) didn't clear. Aug 29, 2024 · Replaced MAF sensor with factory part and inspected air filter and all intake hoses & boots, no issues I can find. is it the cat? Jump to Latest 372 views 5 replies 4 participants last post by bubaji00 Nov 2, 2024 Apr 13, 2018 · Hi. P0420 and P0430 Catalytic Efficiency Faults. Mar 22, 2020 · Recently bought a single cab short box 4. Apr 23, 2010 · 2) Here are the two sensors that result in the P0420 or P0430 code. 5" Med Lift. If the downstream sensor is giving correct data that says the cat is an issue, then the PCM will correctly jump to this conclusion and throw P0430. Table of Contents May 16, 2014 · Hi there I too am in a similar situation while trying to help my brother in law fix is 01 Denali. Oct 23, 2018 · This page is meant to help you troubleshoot the Cadillac CTS P0430 trouble code. I was thinking this could be a bad cat or o2 sensor from the car running rich with the maf off. The P0430 is a very straight forward code pointing to a fault with the Catalytic Convefter for Bank2. Explore repair costs and expert advice at RepairPal. Let it dry. 00 LX470, 160k, WKOR Sliders, OME 2. Jan 12, 2022 · Only use MAF cleaner on something as important as that sensor. Still kept getting the codes, I finally replaced MAF sensor. If they do, intake leak. I was told to tighten my fuel cap. I have a 2013 F350 Crew Cab Long bed xl with 128000 miles on it. There are multiple types of Mass Air Flow sensors but the most popular type is hot wire sensors. (typo fixed) The best part of this exercise was taking the X for a run down the highway to a local park (see below) to see how things ran. The Toyota MAF sensors are extremely reliable, and almost never truly "fail". Here’s Everything You Need to Know to Clean Your Mass Air Flow Sensor at Home. Always use Denso OEM sensors. . 080, Fail and Maximum Sensor Voltage Measure 0. Problem: Check engine light (P0420) Fix P0430: Mechanic’s solutions that WORKED. e. Had IACV and ECU replaced at 125K miles. May 11, 2023 · The most typical mistake made while troubleshooting a P0430 code on a Chevy Silverado and other auto models is limiting the diagnostic to the catalytic converter and the oxygen sensor. ” Aug 31, 2024 · If an oxygen sensor detects your converter has fallen below that 95% threshold, the P0430 error will appear. Mar 17, 2011 · P0420 & P0430 are 'Catalyst Efficiency below threshold' - i. The MAF is an incredibly sensitive piece of kit and will always respond negatively to contamination. I then replaced drivers side downstream O2 sensor. It threw the car into limp mode then, but hasn't appeared until the last two weeks or so. I've been looking in the service manual and seen the list of possibilities, I thought air leak after the MAF sensor for sure as that came off, and then maybe just the connection to the MAF. If oil is present replace valve cover gaskets grommets and spark plug tube seals. The passenger side is bank 2 and gives the P0430. Plugs looked fine. Follow the instructions on the can, basically spray it on and let it drip off and dry. Feb 10, 2017 · In rbarrios's write up you can see all the components. Cleaning the MAF made no difference. A leaky head gasket or fuel injector may be the source of a P0430 fault code. That and your MAF have nothing to do with your more-than-likely bad catalytic converters which are causing P0420/P0430. May 8, 2021 · Take the MAF out of the truck, turn it upside down and you will see 2 wires in the cavity. Feb 9, 2015 · I'd put money on the MAF sensor. I cleaned my maf, poured some techron cleaner in, and reset me ecu. Jan 19, 2022 · I decided to go ahead and replace both cats with Magnaflows. I have a few things left to tackle (driveline clunk, leaking axle boot, driver's door lock actuator). 2V with 13kg/h and Air mass = 3. I already replaced the mass air flow sensor and checked for vacuum leaks on the intake manifold and intake pipe ( it does have a k&n intake if that helps) and nothing changes if I unplug the maf. 275, Max 0. You can plug that back in and leave it in place, it's a good thing. Oct 31, 2024 · 06 Sienna FWD LE 170k P0174 P0430. Jun 15, 2023 · The P0430 code indicates that there is an issue with the catalytic converter in a vehicle, but that doesn’t necessarily mean that your converter is as good as gone. First thing I did was check the voltage of the O2 downstream sensors. Then do usual oil change, filter, MAF cleaning, etc.
wdqona gorintx szzio oyog nldw ibzik ygqug xkxq xak tzowjs