How to diagnose and repair a PO420 on a Nissan Altima
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- เผยแพร่เมื่อ 23 ส.ค. 2016
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How to repair a PO420 on a 2006 Nissan Altima with a 2.5 liter engine.You may not have to replace the catalytic converter with this easy repair.
Due to factors beyond the control of jimthecarguy, it cannot guarantee against unauthorized modifications of this information,. jimthecarguy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. jimthecarguy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, chemicals, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of jimthecarguy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not jimthecarguy. - ยานยนต์และพาหนะ
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Great Video of an honest mechanic. I found one over 35 years ago and sent him a lot of business through the years. My assessment - "Finding an honest mechanic is second only to finding a good wife!"
Now this is my kinda guy right here. Fellow honest mechanic here and enjoy seeing other fellow honest mechanics showing ppl we are still around. Great job 👍
That was a good video and way to go on saving the customer money. Not many mechanics like that anymore.
Thank you
Where did you get the gasket from?? I’m having a hard to finding
@@jimthecarguy can this be done on a maxima 2004
Stephanie Floyd tr t trtg th
@@jimthecarguy I have same code but car runs funny at low speed a light jerky feeling no noise
Great job Jim thank for your honesty and caring for your customers pockets. 👍🏻
Honesty gets you further in life. This is a good mechanic right here. 👍👍👍
Honest mechanics are rare nowadays.. You sir, are appreciated
Jim - I have the exact problem on my 2011 Nissan Quest. I have the engine noise only while driving. I thought it was a bearing issue since I did not have a check engine light at that time. I got the P0420 code yesterday. I'm going lift up the car and check for the leak. Thank you again for a great video that will save a lots of money to folks who have the same issue.
Great video! It’s nice to know that there are still a few honest mechanics such as yourself Jim 👍
Great info. It would have been nice to hear it run again after the repair and also see the real time OBD readings. Thank you.
Well done. I’ve been a emission diagnostic/ smog technician for over 35 years and so many shops don’t know how emission systems actually work!👍👍
Great information for those of who do not know Jack........A very honest mechanic. & a gentleman...Five stars!!!. I repaired my P0420 problem.
Thanks for watching.
wow an honest mechanic great video and thank you jim
Thank you for stopping by the shop
Thank you for stopping by the shop
So refreshing to see honest mechanic helping others and not cheat.
Always a pleasure watching your videos, I am having the same code with my vehicle and i am glad to watch your video
to get me an idea what I'm dealing with. Thank you so much.
Thanks Jim! Always a pleasure learning from you.
Thank you for stopping by and your feedback
Honest mechanic rare breed! Thanks I'm gonna check if that's what's wrong with mine
Great diagnostic skills, keep up the good work .
A class act here , awesome ,HONEST, man well done Jim....
Great job! An honest mechanic, that’s a novel idea! I wish you were in the Phoenix AZ area!
Hard to find an honest, thorough mechanic like this... 👍
Thanks 👍
Honest seasoned pro mechanic. RARE these days. Subbed and voted, sir.
10/10 for the service, honesty and type of person! 9/10 for the vid as it would have been nice if you’d power brake it again after the fix
Jim this is a great true diagnostic video.
Also good form.
Being careful and using and tools.
Jim seems very honest and trustworthy. I would not hesitate to take my car to him.
Thank you for watching. Watch for the next free tool giveaway coming soon.
we need more mechanics like you
YOU A GREAT MECHANIC...
Very good information. I think this is what's wrong with my Nissan cube. Thank you.
Thank you very much, is an very good video, I always said an honesty person is blesed. Thanks a lot amigo.
Great video Jim! I learned something new 😉
I got anissan but few days ago starting smelling like rotten eggs but no codes I tink will need a catalitic converter soon what you tink about it !! Tanks you for your time and effort to teach !!
Great video. Love the integrity 💯
I never thought about the motor mount issue. Good piece of info. Another good one Jim
Appreciate the effort.
Thank you for stopping into the shop
My Motor were Taken lose during last mechanic issue, Now I Get this code po420 and he want me to replace Converter @$800.. I knew he messed up When he took the Motor Mount Out, damaging the Mounts.
nice diagnosis and being fair to the customer. Great catch Jim!
Thank you for watching and your input Mike
jimthecarguy what's the name of the kit that you use for the PO420 code.... or what do I ask for at the auto parts store cause my make the same noise and the light came on 2011 Nissan Altima
Dj Mouse this was the front donut that was leaking. First make sure that is your problem
jimthecarguy will there be smoke coming from that area if that is my problem
The Disgruntled Mechanic quick silver messenger
HONESTY GOES A LONG WAY....I DOUBT THE GENTLEMAN THAT GOT THE SECOND OPINION WILL NEVER GO BACK TO THE FIRST MECHANIC. ..GOOD NEWS TRAVELS FAST BUT BAD NEWS TRAVELS FASTER...THE DIFFERENCE IS THIS PEOPLE WILL USE THE SAME HONEST MECHANIC. ...OVER AND OVER AND OVER AGAIN! THAT'S A FACT! NICE WORK CAR GUY!!!!! YOU ARE KNOWLEDGEABLE AND WISE!
Eloy Garcia thank you for stopping by the shop
Sometimes you love the pivoting head ratchet and sometimes you hate it... :-)
Thanks for the vid and the info!
my outlander sounds almost the same,you cant hear nothing when its not moving but when it accelerate noise you can hear with lil ticks,have to bring it to the shop and get it check..nice video,i wish i live close to you..
Great job with the diagnostic and explanation.
I have a Nissan marino and its doing the same thing. Thanks if this focus it. Great job man
Thank you sir you saved me a lot of money great video and you are a honest man
Thanks for watching.
Thanks for the helpful video. I like the Italian accent 🇮🇹
Thank you very much for your great details video
Good work jimmy.
Samething I just had done on my car today. So thankful my mechanic is honest. I thought for sure it was catalytic converters. Would've cost me thousands of dollars had it been that. It was just a gasket leak same area as here on this video.
Hey Jim! I wonder if my older 2001 Nissan Altima has the same problem. The "service engine soon" came on last October after I filled the gas tank. Nissan turned it off, believing it was a gas cap issue, but it popped back on again. There are no strange smell or noise, but also no exhaust from the tail pipe. It sticks a little on acceleration, drags uphill, and hiccuped once when I stopped at a traffic light. Just as I am about to park it so I don't blow the engine and I cannot afford to replace the cat, I see your video and remember that Nissan's been suggesting that there's a leak somewhere. I didn't think a leak was that important because there were no puddles underneath and the car seemed to run fine. Even though I'm late to the party, thank you for sharing this new perspective. I'll check it out.
Very smooth sir. Very smooth
Pumping out the videos tonight Jim!
Actually I made a mistake but putting up 3 in one night.Oh well.Lol
Thank you, because I believe that's the problem with my C-RV, also the motor mounts are probably worn out causing tilt. That was great.
Thanks for watching.
was is the problem?
Great video very informative. I have a 2010 nissan altima 2.5L dealership sales person says I need a new cat conv. Says the whole manifold needs to be replaced they aren't cheap any more. $1200. This cant be actual cost. Pooling my research resources. Any comment by you is appreciated. Thx a bunch!
Very good video, I like iit, very help-full.
Great Job! Thanks for the explanation!
Thank you for watching.
Ok thanks Jim I like ur videos very well explained
Great video i got a 2013 Nissan Sentra that had this alarm snd it was a head ache trying to figure out. But thanks for the tips on where to look.
sounded like a plugged rear catalytic converter. that may be why the donut gasket failed. agree with you about that manifold cat looking cooked
Thank you for watching and your input.
Thanks for the great video man.
Thank you and welcome to my shop
Thank you Jim really useful
Thank you for your time sir
Wow! I should have watched this first lol! I changed all 3 of my 02’s and the first cat and light still comes on lol! I’ll be checking that gasket next! If it is I’m gonna be mad at myself lol!
Well, was it the gasket?
@@urielgomez3701 nope it keep throwing a light after a while . Now my tpms sensor has gone bad so light stays on. Have to replace all four at once smh
Had a 420 not so long ago that was intermittent.That possibility never dawned on me that joint might leak . Great call Jim !!
Thank you for watching and your input.Yes just a little exhaust leak can cause a lot of problems.
Was that an accidental word play on " 420" and the word "joint?!"
Great video. I am currently experiencing this problem right now and am looking to get my nechanic to do this for me. Would you be able to let me know what parts is it that I exactly need to pick up to hopefully fix this? Thank you in advance.
This man is god of vehicle. He is very intelligent with a pure honest heart. Would love to be friends Wirh this man. Good man very nice kinda mechanic and what every mechanic should.
Very informative . Thank you
Mdta Wpl Maint Appreciate the comment, thanks for watching.
Great work there Jim. Full diagnostics of the problem, and what caused it. I'm sure the parts changers at the last shop didn't listen to the customer about the noise coming from under the hood. Just seen the code and went for the cats. I'm sure the customer is happy also, since they don't have to replace the cats. You earned yourself another long term customer.
Thank you for watching and your input.Yes he was very happy.
Great diagnosis, and helpful tips along the way. Wish you were close by. I have a 03 Camry 2.4L with DTC PO-420 catalytic converter threshold fault. Everyone points to the trailing 02-sensor to clean or replace before thinking about replacing the catalytic converter. Is there anything else I should be looking for. Great tips by the way and Thanks for the video.
Great job saving the customer money unlike so many crooks. You sound like a New Yorker?
I like that approach….thanks
Sure is cheaper than a new cat. Good work Jim.
Yea I thought the owner was going to kiss me he was so happy.That would ruin my day.Lol
Thanks my friend that's a good dino good video
Hi , great video ! Very honest evaluation.. did it work after you installed the new flange on the muffler.. please advise as I having the same code on my 2009 Nissan Altima.. thanks 🙏🏻
Good fix Jim !
Thank you .Sometimes it's a simple fix and some time not.With this one they were lucky.
Thanks for the video amigo, I like your channel.
Thanks for watching.
Thank you sir. You save me a lot money.
Jim is a good auto tech
Thank you Jim
Thanks for stopping by the shop .
great video, maybe a little of Loctite Threadlocker and torque it down will prevent them loosen up later.
Very good video but we should always wear safety glasses when under a car or using an impact. Thanks again for the great video
Thanks for watching.
Long life to you jim so I know how to fix the p0420 in my maxima 02 grasias amigo .
Thank you for watching
Exelente trabajo.
I forgot to say thanks for the video, the info and for your time
Glad to help
Thank you for your help!
You're welcome!
Thanks for the video.. does it works in a Nissan rouge with the same code?
Great job
I wish I had you as a mechanic here in Las Vegas 😭
I need this guy. my check engine light had been on for like 3 years
Thank you for your input and for watching
I really enjoyed your video. So many different opinions. Anywho i have 2012 honda civic ex 1.8l with. A po420 code. Many say to change the o2 sensors. What should i do? I have 150k on car. Want to make this car last. Seems like you have alot of experience.
bolts not an issue getting car 6ft high for easy access is lol, good to see machanic do right by their customer.well done
Thank you for the information good day
Thank you and welcome to my shop
jimthecarguy wow I took my 2010 nissan altima to the shop yesterday because of the engine light that came on and the service code read p0420 and the mechanic just automatically says you have to get your entire exhaust system changed and it's $700 just for the part.
Put a Japanese import engine in my 06 Altima with 225 k on it. The original engine had worn valve guides. The import engine had a lot of soft carbon probably too many short trips. Getting too many misfire codes. Put two cans of Sea Foam in the gas tank. That fixed the misfire but fouled the converter. I removed the primary O2 senser and sprayed a whole can of Berryman carb cleaner in. That problem went away. I think the misfire problem was being fixed by driving it 50 miles a day on the freeway. I just got impatient.
Great video. I own a 00 sentra 1.8L w/low miles & have been getting code po440 for a while which I just ignore after changing my gas cap & delete the code. Today I received po440 & po420. The po440 came up twice as it read 3 codes. The car drives ok w no rattles other than my rotors.
Could this be a false read for something else or is my cat fried??
My '05 350Z has a P400 code: Bank 1 Cat is bad. But, after watching your video, what i saw makes perfect sense. I noticed a nut on the flange of Bank 1 is loose. So, it would be fair to say, this could be my culprit, i hope. Now i know to go and tighten it and see if this works. Thank you sir for an informative video !
Your awesome so kind so honest very smart
Good and Nice Auto technician.
Hung Ho Thank you for watching.
Hi you are good at what you do and you seem fair and honest
So I have a question I have a 2004 gmc envoy xuv and I love her I got a check engine and I got codes p0171 and 2 p0420 codes all day bank 1
What you think sir?
Great video and honest catch. I have a car inefficiency code and just today I noticed that a downstream sensor wire is burned from resting on the exhaust pipe. I wonder if that’s what’s caused my catalytic converter code?
If there's an issue with the downstream sensor in the Nissan Altima, it'll throw a cat code, even though the cat isn't the issue.
You’re the best Jim!
Sir your awesome , the world needs more honest people like you,.
Hey were are you located?
Nice tip!
I wish I knew what spri,g kit you used to mount that donut or gasket.
Good video
I found it Jim!!
420 code video
if I get that same code for my 04 Altima does that mean its the gasket just like the video or I should get the cats and exhaust system looked at first?