Causes and Fixes P0430 Code: Catalyst System Efficiency Below Threshold Bank 2
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- เผยแพร่เมื่อ 27 ส.ค. 2024
- How to fix a P0430 engine code: Catalyst System Efficiency Below Threshold Bank 2
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Finally a great video to find potential causes without forking out $1000s right off the bat. Many blame the cat right away and resort to the unnecessary and illegal adapters
Got this on an LX470, i ended up clearing the code and it hasn’t popped again so here’s to hoping. Now, a little while later I’m looking for videos on it in case it comes back and i stumble upon this, definitely subscribed and super informative.
happned to me, cleared the code and it went away on the tablet too
Wow GREAT information very informative and tips that I’ve never heard from other TH-cam videos with same scenario. Thanks 🙏🏻
I check my exhaust a there was a hole and when I welded it the engine check light came off
Heck yeah
Agreed!
Don't even play w me I've taken my car to 3 mechanics no bullshit no one can figure out tell me why I just found a hole exhaust 3 days later.....
You are awesome. Short and sweet. Thank you.
Yoooo.
Wow great video man thank you , clear and to the point
thank you for the info GOD BLESS GOT THE SAME PROBLEM ON MY 01 SILVERADO
I had a very bad antifreeze leak. Caused other issues. After I got them repaired, I still had a check engine code p0430. I used some cataclean after a few days of driving my check engine light went off. Added it to the fuel at a quarter tank and drove it for about 15 minutes then filled up. Yo decided to go that route before changing my 02 sensor.
I had lean codes both banks from a cold thermostat I put in along. With p430. I put the stock thermostat back in and lean codes are gone and p430 just doesn't want to say goodbye yet...think I am screwed.😮😮 UPDATE it was not the thermostat it turned out to be the secondary air check vale gasket had a leak .
What if the exhaust leak is behind the cat?
Hey there, I'm getting this code (no other codes with it) - I put a catalytic converter cleaner in my car and after some days my car becomes randomly sluggish as I drive, as mentioned in your video I step on the gas and the car doesn't go, feels like its losing power, and it shoots a bunch of gray smoke out of the tail pipe as this happens, it's a 01 nissan sentra gxe 1.8 with a lot of miles on it, any help
I would test the catalytic converter to see if it has failed.
Good day to all. I have a car Honda Odyssey 2013 3.5 v6. A few months ago the error code p0430 came up. I replaced the sensor with a new one. and So I drove 7000 miles when it caught fire again. (p0430). There is no loss of power when driving. and there is no feeling. The engine oil is clean. Thanks in advance for anyone who thinks about this.
excellent ideas! I hear that laq thinner run thru the gas works well.......... (has for me!) full gallon
I have both po420 and po430 on my ford and noticed there’s a exhaust leak but in the resonator far from the cats could that possible be it?
Thank you so much that was very helpful
Good explanation thx
I changed my both a 02 sensors, with no luck, no holes or leaks, i noticed a misfire at idle, with no codes, i changed sparkplugs and wires no luck, i then changed fuel inyectors and all codes clear, usually chevys inyectors goes bad at 150,000+ miles
Where would I buy some good catalytic converters
Amazon. I just bought 2 from the Eastern Catalytic brand
I know a few tweekers they can give you a real good deal 😂😂😂
Rockauto
Flowmaster
I notice that everytime I used gas from a certain gas station, soon after I get this code. When I ran almos out of fuel I go to a different gas station after a few minutes driving, the engine light is no longer on.
I only run Chevron 91 octane cause i noticed it fixed my code on my tahoe
CRC Guaranteed To Pass Fuel System Cleaner 12oz
Whill cleared your code and clean your exhaust system i just used rhis bottle works like magic it cleared on its on and my check engine is gone this stuff works as advertised
I will add my results with cat cleaner for my Toyota FJ cruiser has pist me off on this p0420 crap I ended up just wasting my money I even put lacquer in my tank 1 gallon as scotty Kilmer said that would work once my drive cycle reset code came back so I ended up buying a spark plug fouler drill out so o2 sense would fit no more p0420 code now a evac code I can't win for loosing in 2025 emissions gose away in texas no more I be happy like many will I think buying a 10 dollar spark plug fouler best and cheap way to go and be done with chasing a ghost
Were u losing power to? Did it come back after
Waste of money dude , I’ve tried all those car clean products , none of them worked , light came on a week later everytime !!
Thanks for the insight - in my case I got P0302 Code 1st - changed the spark plugs & boots, a few weeks later I get the P0430 code. What’s the best course of action?
Did you watch the video? He literally explained what to look for and what to do when you get a p0430 code.
😮now I’m bout to be u set car this weekend looking for everything lol
Try to improve your english. I have no clue what you said.
20093 tahoe- 154000 miles. Engine developed p03000 random misfire a few months ago. Interestingly, I had a new catalytic converter and 02 sensors put on about 4 months before the random misfire started. Engine only misfires when truck is under a heavy load. In Alabama in 95 degrees weather running 85 down the highway with the ac on full blast. We tried to pull a small uhaul trailer and the weight of the trailer and the ac would cause misfire. Tuneup done. New Coil packs etc etc. Didn't fix. Now It's throwing this code also. Last Mechanic seemed to think it was related to emissions/evap. He didn't have time to dig into it, and at the time no codes. Just the random p0300. Then it would clear. Thoughts? I'd be so grateful
The only component in the EVAP system that may cause a problem is if the purge valve stuck open. This usually only causes issues when the engine is starting and not under load since it would be open. The fuel pump may be starting to fail and not able to deliver during a load. I would test the fuel pressure at the fuel rail.
@@HVAC_Mechanic awesome. Thanks.
@@HVAC_Mechanic what about a bad 02 sensor that is " capped out" but not bad enough to throw a code? Or bad fuel pressure regulator?
Will an exhaust leak downstream of the cat trip this coffee?
I have a 2004 Ford f150 FX4 5.4 3 valve will the p0430 keep my pickup from starting.. or cause a crank but no start..
Ya my truck is getting so many codes, my darn head is spinning like a top.
Getting this code again.
A year ago I got the code, then added Cataclean & the codes went away.
It's back, and I guess I'll try cataclean again.
Any other tips?
The 2010 4 runner drives great and I hope this clears up the issue.
Hi do you fix it??
It's says on the bottle to use atleast a couple bottles of cataclean a year. Did u loose a lil power? Did it the power come back after u cleaned it
I just replaced my catalytic converters and sensors on my f150 3.5 ecoboost. Also replaced my spark plugs and coils. I was having power issues when I would get up to 70mph. After all of that, I am still having issues at 30-40mph and 70mph. The truck loses it power and sputters. I took it to Oriellys, and the P0430 came up. I'm starting to think that maybe the new catalytic converter or sensors are bad from the manufacturer? The only code that shows up is the P0430. 😢
I have a 2019 f150, had my catylitic converter replaced under warranty around 68,000 miles. Less than a year later, Ford is saying it needs to be replaced again. Replacement parts were on back order. Seems to be a larger issue impacting lots of folks, surprised there's not a recall yet
@@jarvicerandolph9949 It sucks so bad. I just want the power of my engine back. 😫
Thanks for the video. I have a 2008 GMC Sierra. I had both of the catalytic converters replaced about a year ago. About a month ago I had all of my lifters replaced on the passenger side due to a failed (collapsed) lifter. My engine light has been on right around the same time. I used a catalyst cleaner and had the code cleared. I have driven it for about 150 miles since clearing the code. The engine light is not on but the code is still stored in the memory and I cannot pass inspection until it totally clears. How long does it take to do that and are there any tricks? to help it along?
I forgot to say, the code was for low efficiency catalytic converter bank 2.
It may be clogged from the engine issues, and it is hard to say when it will burn out.
@@HVAC_Mechanic Okay, thanks for responding.
I have a 08 Saturn Vue about 121k miles and I got a P0430 code and P1133. CEL came on after getting the oil changed. The ride isn’t necessarily rough but it GUZZLES gas like crazy. Any advice?
I have a 2014 dodge charger, which side is bank 1 Catalytic Converter ?
Passager side
Hey boss, I have a 2015 altima 3.5 sl. I have this code and c1155 (front left wheel speed sensor imput circuit failure)
I replaced the front left wheel s. Sensor. But car is still going into limp mode. (Car stays on but doesn't receive power or rev) but it does when I put it in park. Rpm jumps up like it's burning up whatever leftover gas. Turning the car off, resting, then back on solves the problem long enough to drive home from the gas station.
Hoping you had some insight
This is just a guess, but it sounds like an engine problem, like a leaky injector or similar. A leaky injector will clog up the catalytic converter and give false Cat codes. Also, many vehicle computers will shut down ABS brake systems when the engine has issues.
I changed sencor still with code
Sorry but bad news after 10 to 12,000 miles exact same code will come back and you will clear it 2 to 3 days and then a week later it will come back all this really does is clear the code out so you can get through omissions and shut the light out you’re going to have to deal with a cat situation fix the problem Find out why is common on find cars I know because I’ve done it. I went over everything on my vehicle that would cause this code I know what the problem is I just wanted a quick fix so I can get through omissions after 10 to 12,000 miles that coded come back instead of a P430 it was a P 20 I know I have to pull the cat replace it get it pulled out and get the cat cleaned out, because I know it’s not broke it is starting to plug up. I feel it because I am getting pinging on acceleration when your cat system starts. Plugging up yoga pinging, loss of power and EGR codes O2 sensor staying at center. You will have to go aftermarket do not go cheap. This is just a fix that’s it you’re going to have to deal with troubleshooting this system. I know this is bad words to people, but it Hass to be done.
Yup
What if my truck is straight piped? Is it normal lol
I have a 2011 jeep liberty runs great. I got this same code . Says bank two is that upstream or down stream
Probably the Cat I have the same code on my Sequoia. Gonna swap the cat and hope for the best.
Try cleaning it befor swapping it they are expensive
@@disasterlight148how did that work? Did you test exhaust first?
Sooo.. uh what if my cat is gone and I don't plan on putting it back? 😅
My Man you hit it right on the nose; skip rope shoot do!! But never bull sh!!,why did you have be s
How do I check the 02 sensors to make sure there goog.