What to Do After Replacing Mass Air Flow Sensor and Engine Light Still On Code Will Not Clear

[@simonsafi7589]

I have a 2003 ML 350 M112 engine that is driving me crazy, I checked all things you said in the video and the code is still present and the vehicle stalls or hesitates when the accelerator pedal is pushed quickly even I tried a new mass air flow, the scan tool and ECU reads in data stream the air mass and how much air is entering the intake system. I also tried a new map sensor , throttle body , throttle potentiometer and the code still On and the vehicle hesitated.

[@rtw5689]

You all make some great videos. Keep it up! You get right to the problem and possible solutions. Thx, Wiliama

[@Delfi1900]

You still need to drive the vehicle for at least 60 miles so computer goes through it’s proper preset run cycles, even if you clear the codes and you are trying to pass smog it will not pass until you complete the required drive cycles..

[@kemzdon8245]

What if I’m misfiring still?

[@kemzdon8245]

Do I drive said 60 miles still ?

[@memorandum740]

You wouldn't think so with the crazy shifting, but it does get better after driving... I didn't know clearing the code was the problem. Appreciate it

[@bb_arnett3181]

Thanks for information

[@Ramz_Uncut]

I changed the maf and now the rpms are going up and down non stop and adv trac control light came on. Rpms were not going up and down all the time

[@radical1969]

mass flow air sensor fault keeps coming on after I changed the sensor and cleared the code. I have a 2012 Toyota Tundra. What could be the problem.

[@Invalidy]

The air filter might be dirty so try replacing that

[@booostedtc]

Same with new air filter replace maf code keeps come back I guess time to check the wires

[@justintime3014]

Take a shop vac and suck out all the shit

[@alealeal15]

My 2011 scion did the same changes as u alsoaor filter & some spark plugs & still the light turns on the mechanic says everything looks good

[@lupedelacruz4152]

​@@alealeal15is it a good mechanic with a top-rated scanner that can read the oxygen sensors and any leaks with smoke machine

[@Fit.For.A.Firefight.]

This guy has good info but he does not answer your questions, so don’t waste your time in asking. Just Keep searching.

[@thomasspero2496]

Excellent video. I have a question for you. I have a 2012 Rogue with a MAF problem p01 01 code. The Nissan dealer replaced the MAF. I replaced the air cleaner. I did not replace the PCV valve yet. The dealer I go to tells me they cannot fix the problem any more than they have because they do not have a Master Technician??? I am going to have to travel a ways to get a dealer with a Master Technician. The engine light has gone on twice now. It is supposedly fixed now. If not and the light goes on again and the car seems to run fine I want to turn off the engine light. I purchased a Walmart Hyper Tough HT 100 code reader. It is not much on instructions. It connects with your phone via Blue Tooth to give an explanation of the code. I do not need an explanation and I just want to turn off the engine light. My question is, do I have to use the Blue Tooth feature with the HT 100 or can I just plug it to the plug in the car, turn the ignition to on, read the code, and push the red button to clear the code?? Thank you, Tom Spero

[@isaacgonzales1923]

what if it is not giving you a code but still running like the sensors bad

[@no_facemo]

That might be a misfire check spark plugs and ect

[@islandbeaches395]

Have any experience withCenTraVac chillers? Constantly surging l.

[@juanzarate2954]

Replaced the sensor 3 or 4 times and after driving the truck for a while the check engine comes back with bad maf sensor any ideas

[@WakaweeLompo]

This guy is really good❤

[@ErigFlorenciaPauler]

I need your help, I have a BMW 3 Series 335 Msport 2014, the car only has 28 thousand km, I changed the high flow filter with a CTS intake, my car had no warning lights, but when I disconnected the Maf sensor from the original filter and put it in a new CTS filter, the light came on. In the check engine the clear appeared with a scanner and it did not appear again but I changed the filter again and disconnected it. Sensor and the check engine came back on, what should I do?

[@Throughthelurkinglass]

2004 BMW 325I. Only code I have is MAF circuit high, cats are clogged. Only reason i can think it throws MAF sensor is back pressure coming through EGR valve into Crankcase. No cat code whatsoever.

[@2VShiesty]

I’m getting o2 sensor codes for bank 2 I changed my Maf sensor but engine light still on

[@d34d_lokiii93]

test your o2 sensor

[@d34d_lokiii93]

garnered it's a bad o2 sensor

[@2VShiesty]

@@d34d_lokiii93 thanks I’ll try that

[@ErigFlorenciaPauler]

At this moment I have the original filter but when I disconnect the maf sensor and reconnect it the check engine light comes back I have the scanner here please let me know what to do

[@dileepnair1000]

Did you try removing battery terminal and reconnect after 5 minutes, I read it somewhere, I am not a mechanic,fyi

[@theripper791]

Good video. Straight to the points.

[@garymarble8362]

2014 Escape 1.6 replaced the map senor but run good for awhile then go back running bad

[@libradamontano2340]

We replaced maf sensor and enginr filter and the car ran amazing. A few hours later check engine came on and the car started driving rough again. 😢 what happened? 😢😢

[@robdog7915]

Me too!!!🤕

[@polargc8990]

Did you fix it?

[@libradamontano2340]

@polargc8990 unfortunately no. The check engine light disappeared, but the problem is still there.

[@TheZOEKID]

Im having same problem that's funny ​@libradamontano2340

[@marspalk7611]

Cleaned the maf sensor and after that check engine light came on. Why? Check engine light was not on before.

[@bridgetsmith6653]

I have a 2020 Nissan kicks put new mass air flow sensor in light went off but came back on days later help

[@Watchout1010]

Updated pcv valve is the cure,your welcome

[@shlimz]

Happend to me what was it ??

[@hunteryt5361]

hi, i got my valve cover gasket change on my bmw and it started showing these codes. so i was wondering if these codes happened cuz of that change?

[@shirleylewis1366]

Removing the battery cables will that reset the code for the engine light to go off after replacing the map sensor?

[@nobody1322]

to test for vacume leaks can I spray sea foam on the hoses to see if the rpm’s change ?

[@Fit.For.A.Firefight.]

I believe you can use sea foam but most people use WD-40

[@thegoodinu]

It's safer to use smoke than a flammable liquid to find vacuum leaks.

[@defiles8698]

07 328i sedan p116e cleared code and it came back and rpm’s jump when pressing the brake pedal. aswell as the car almost stalls when holding brake pedal on startup.

[@Jay2k2323]

So i changed it and my car won't stay started

[@Historyrewritten679]

Same issue here. It runs for few minutes and shuts off. Were you able to resolve it? If so please help me out. Any help will be appreciated.

[@theevilgenius2262]

@@Historyrewritten679disconnect MAF start vehicle, then connect again. If it stays running drive for 10-20 miles. Computer needs to relearn.

[@anngordon1154]

We took my 2016 chevy Tahoe because of check engine light and it came up p0101...we replaced the mass air flo sensor and had it re set and about 20 minutes later it came up again with same thing so replaced it and it was good for about 1 day then check engine light came on and dame code...took to mechanic and he checked with his computer and sane code but he also checked wiring and other stuff and had to get another sensor...replaced it and lasted about 3 hours and then check engine code came up again with my car acting funny so went home and called him...he can't get it in to check because his computer is down and I'm frustrated because I've been without a vehicle for 3 weeks and need it to get my grandson to his appointments from being a cancer patient... What do I do now?

[@generationsofmotivation9212]

You can still drive the vehicle with a p0101 code. You'll fuel won't be as good but it's not going to destroy your truck unless the engine is running very lean or rich for extended times

[@HouseofCardsUnfoldTheTruth]

Try leaving Maf Sensor un- plugged! Still will run! At least on my 02 Mitsubishi lancer 2.0

[@fireboy5043]

Yea u can drive with it unplug it may run better

[@ronchew391]

That was really 🙌🏼helpful! Thank you

[@DenisMorissetteJFK]

I still get the code after changing the MAF and the oxygen sensor next to the MAF. Also put in a new air filter. But I have not installed the oxygen sensor that goes after the catalyzer under the car. Mazda 6 2013.

[@jmb-bj9gs]

I'm sorry this may seem a little of a long text .Originally I had a lean code p0171 back in March. Looked for vacuum leak none to be found that I know of . Car still ran good . As time went on ,for about a month now the car began having poor acceleration, esp uphill . Finally the CEL went on p0101 maf sensor. Other leaned didn't come back . Took MAF sensor out , cleaned it put in back in , car still ran rough , still with theCEL on w MAF code, p0101. Only code. . Car running still weak. Yesterday CEL went off while idling, then it really ran shitty,even less power ,worse than has been . Cleaned MAF sensor again . Car finally ran normally , for 5 min. Took a quick drive .then the CEL went on again , car ran rough not as bad as before ,but noticeably different . Keeps messing w me . ! No other issues , codes ,etc just the poor acceleration. ??

[@HVAC_Mechanic]

It needs to be troubleshooted, but it looks like there is an intermittent problem with the MAF sensor. It likely is a failing MAF sensor or an issue in the wiring such as an open or bad connection.

[@azimzakhidov3464]

Having exactly same issue. Don't know what to fix. Replaced oxygen sensor, maf is almost new, cam shaft is new , PVC is cleaned, vac hoses are cleaned, checked, throttle is cleaned, vvt valve is clean, intake manifold replaced, ... still having issue, loosing power, realy bad acceleration, especially on hill (even its small degree). Does anyone know what need to be fixed

[@jmb-bj9gs]

@@HVAC_Mechanic hi thanks for replying, sorry it took so long , anyway I agree about being troubleshooted , I did replace the MAF sensor ,just to see if it was MAF sensor related,. I bought it off Amazon . It was an inexpensive one , didn't want to fork out $300-400 for a part I wasn't sure about . I still have original MAF sensor ,it still may be good ?? . One thing I have noticed is all the symptoms still stay the same but it happens more infrequently because climate/ weather is getting colder . When it was in the 80-90° the trouble was happening much more often .

[@jmb-bj9gs]

@@azimzakhidov3464 hey there , what kind of car ? Any CEL ? Hows your battery? Is it a new new camshaft ? Or were you referring to just camshaft sensor?

[@azimzakhidov3464]

@@jmb-bj9gs Toyota Corolla2006, check engine light is popping up every time i change/fix something after about 4-5miles driving. Battery is good caamshaft is new,

[@Warrior790]

I replaced the MAF censor and had it reset but the next day when I filled up with gas it came back on. So don't know what to do really. I will check the air filter and see what that looks like. And see where that fuse is located. But any help would be appreciated. Thanks for the video

[@RA-ie3ss]

What was it?

[@Warrior790]

@@RA-ie3ss Still dwindling it down. However I did replace the intake manifold gaskets and pcv valve with new spark plugs or rather coils on my truck and now it has alot more power. The engine light has stayed off for now. So I'm going to replace the fuel pump and fuel filter. Slap on a new caddiliac converter with new exhaust system. Also replace valve cover gaskets. Possibly the purge valve dont know on that one yet. But I will say the trucks driving pretty good now.

[@TherealClipology]

could an p0172 be related to any of this info

[@garethoswald3392]

I have a 2018 b class merc 2.2 diesel. And been plaqued by po101 code for years. Tried everything. New maf. Map sensors. Smoke machine test ok. Genuine merc air filter. Some days its ok but mostly comes on few times a week. But just found this. Not exactly a fix but worked for me. I noticed if i ran in sports mode. No code appears ! So set my incar screen to custom mode. Engine/sports. Comfort suspension etc. stop start off. No po101 comes back. And no difference in fuel consumption. If you got car with setable modes try it !!

[@brandonleyva1097]

I have a 5.3 silverado 2011 and i replace the air mass sensor and the filter and its still has the problem when i cold start the truck its makes the sound and as i drive it does it very little then after a good while it goes away but it has been doing it lately and i have already drove it 60mph Someone please help😊

[@lupedelacruz4152]

Possible gasket leaks on your intake has it heats up the gasket seal better good luck good luck

[@mstoomuch5071]

2017 Toyota Corolla le. Mafs code 5 times. Put a new mafs on twice and new engine air filter. Still same code🤷🏼‍♀️

[@KaylahSundara]

Did you find out what it was, I changed my air filter 2 months ago and changed my Maf the code went off than I got gas and my car wouldn’t start unless I step on the gas a couple times first and engine light came back on same code.

[@mstoomuch5071]

@ no I’m sorry I did not

[@JustME-zn2vu]

So I have a 2008 mazda5 with around 148k miles and these are the codes I’m getting: P2188 System Too Rich at Idle - Bank 1 System Too Rich at Idle Bank 1 Secondary DCs P2178: System Too Rich Off Idle Bank 1 P0101 : Mass or Volume Air Flow Circuit Range/Performance P0841-FF: Transmission Fluid Pressure Sensor/Switch A Circult Range/Performance Concern I have taken the MAF sensor out and cleaned it and let it dry real good and put it back but I didn’t reset the codes. The check engine light did turn off but later that evening came back on. I haven’t tried to pull code again but would anyone know why it might have come back on?

[@justin8750]

Same situation except Bank-1 / Bank-2 Lean Replaced MAF sensor & reset codes. The light came back on the next day & wouldn't start easily ( 2017 Toyota Highlander ) I'm lost at this point & my Bank account is also getting lean

[@JustME-zn2vu]

@@justin8750 same with the bank account. I ended up cleaning the throttle body the best I could and that has actually fixed it for now. It was only a half assed job, so I’m gonna have to figure out how to do a full job here real quick.

[@AmbA4]

N80 purge valve maybe

[@JustME-zn2vu]

@@AmbA4 I ended up replacing the MAF sensor and it’s still throwing basically the same codes, System Too Rich at Idle Bank 1 Secondary DTCS P0455: Evaporative Emission System Leak Detected (gross leak/no flow) P0456: Evaporative Emission System Leak Detected (very small leak) P2178: System Too Rich Off Idle Bank 1 P0101: Mass or Volume Air Flow Circuit Range/Performance P0335: Crankshaft Position Sensor A Circuit P2405: Evaporative Emission System Leak Detection Pump Sense Circuit Low P0841-FF: Transmission Fluid Pressure Sensor/Switch A Circuit Range/Performance Concern It also says that it needs a new EGR vacuum Solenoid… at this point idk what to do. If I keep driving it things will obviously get worse and break other parts but I don’t have the money for a shop and I don’t exactly have the knowledge to fix it myself.. and right now I can’t just park it somewhere.

[@dawnburchett1413]

I replaced my maf sensor ive cleared the code an drove an the check engine light came back on an its the same code for maf what do I do next

[@RA-ie3ss]

What did you do?

[@hollycolotta9859]

Thank you so much for the info. I'm going to check into this I'm getting p106 map sensor code and I've already bought three for this vehicle it's a 2012 Kia forte but that is not the problem cuz I'm not buying a fourth one I'll keep you posted

[@MircoAlexander365]

Hi, did your problem get a solution? I'm currently on 2nd mass air flow sensor on 2011 kia sportage.

[@MYKEYSAUTOMOTIVE]

If you replace it.. you will have to run it for a while .. as long as it’s not running bad you should be good keep running the vehicle until the light turns off

[@wexwayne]

Hi does it take long for it to go off?

[@KATRINASOLDAAT]

I changed my air sensor but the car not right.

[@TheChadls]

I'm just getting a mass airflow sensor code. I replaced it once and it came back sent the sensor back. I thought it was bad gas so the light came back on and I ordered another mass air flow sensor the light went off but came back on. I sprayed some seafoam in the induction and the light went off but came back on

[@taylorb21554]

i have a 2019 frontier, getting p0101 code, been to dealer 3 TIMES!! new sensor installed, 3 days later had to come back because "idle air relearn" didnt take. BS, then they send me on my way again, and 3-4 days later, BOOM again. Back to dealer. Now they want to relaplce the throttle body? I'm thinking more electrical.

[@aaronhernandez3378]

@@taylorb21554did you ever get it figured out ?

[@junello8354]

@@taylorb21554did you get it figured out? Have taken my car in 5 times (2 different shops) in the last month for this. Lights came on again so I took it to autozone for a scan and of course, MAF. Hopefully this video will give me a clue.

[@Heather-eg4rq]

Got a code that ignition coils were clogged. Ran some cleaner through. Light went off and then came back on. Changed the fuel filter and it went off. Then it popped the mass air flow censor. Changed the maf censor. Disconnected the battery. Now we are still getting the code. Anybody else ever had this on a Ford Focus. Thanks.

[@virgo7033]

did u ever figure out what was wrong?

[@garymarble8362]

Comes and go runs OK for awhile and then start run bad again Map senor replace

[@matthewhuling8582]

Thanks

[@vanessachavez3768]

Ugh...I'm on my 3rd sensor this one is brand new...Just coded again...About to go find out what my lucky numbers are..I have court tomorrow for an inspection sticker and i cant pass...Everytime i fix something, something else codes...I'm losing my shit

[@jamesdaakron4790]

I replaced the upper and lower intake manifold gaskets on my 2004 Supercharged 3800. The project went on for 4 months. After reassembly, the engine ran like crap. It turned out to a vacuum line that ran to the MAP sensor (at the back of the engine). I tossed it because it was falling apart and then I forgot all about it. I capped the mystery vacuum port until I could find it’s destination. Bad idle and stalling. GM had relocated my MAP sensor, on a L67, behind the engine so, un-hosed, it was sending strange values to the PCM. There was no vacuum leak because I capped the mystery port. It passed all of the vacuum-leak tests. I finally read up on the MAP sensor purpose, found it , and plumbed a new line. Mine was reading ambient atmospheric pressure, not the intake manifold vacuum.

[@jamesdaakron4790]

It threw a P0101 Code. Bad values from the MAP Sensor with no vacuum, in my situation.

[@sandrabrunsdon2114]

How do u check a maf sensor? For a 2011 suzuki kizashi

[@sandrabrunsdon2114]

Just got a brand new maf sensor and sensors still come up and car sometimes won't start. Even after the code went off on the scanner. Or how do u check to see if the fob is the problem. Changed the fob battery a few months ago.

[@goldmouthfamily1910]

Replace your catalytic converter and plugs!!! Problem solved

[@atos.nympha3451]

Going through all Mercedes fuse is a project lol

[@ShrutitPatel]

6fccc

[@1961muskrat]

Stop buying German design machines been fighting a 2007 Volkswagen bug pH 0411

[@oOohdaddy]

Is this universal or does bmw have their own "what to do list"