Mazda 6, P0101 fault finding & diagnosis (Part 1)

[@KeithKnorr]

Have watched most if not all your videos. They have been so helpful. In this country (South Africa) it is extremely difficult to find reputable mechanics/technicians to work on these cars apart from the agents. Am busy changing the coolant plastic bypass pipe to a Mazda recommended metal one. WTF., one has to remove the intake manifold to do the job. 🤬

[@kennedysgarage3281]

That is correct, intake manifold removal is the only way to do it. They do leak quite often but mostly on the automatic transmission models. It is slightly different. I’m glad you like my videos and thank you so much for watching 🙏🙏

[@damienkearns9922]

So interesting Peter and the more of your videos I watch on the Mazda 2.2 the more interesting this engine becomes…and as you demonstrate time and time again a logical approach to the problem yields a positive diagnosis…rather than the change this, that and the other part/sensor. Great videos..you are helping me loads…waiting for local Mazda parts to open to pick up the new injector seals and oil sump filter (which seemed ok - so this is a preventative maintenance) Next for me to tackle is the blocked DPF… Keep the videos coming.. 👍🏻

[@kennedysgarage3281]

Thanks Damien & good luck on the repair work planned, contact me if you need any advice 😉👍

[@thecapedcrusader326]

Peter, be careful. You're gonna end up becoming Europe's eminent Mazda 6 expert! 😂 Great video as usual. It'd be really good if you did a video on the common failure points on the Mazda 6 covering all aspects of the car.

[@kennedysgarage3281]

People seem to like the Mazda stuff so I’ll keep them coming 🙂🙂 And lucky me being a Mazda guru 🤪🤪👍

[@cebudave]

Great video as always Peter. I spoke to a local mechanic who advised me to get a carbon clean using a hydrogen generator, I was sceptical as I didn't see how this would help desolve the carbon in the inlet manafold, but went ahead with it anyway, needless to say it was just the same after the carbon clean. The only real solution I found is to remove the inlet manafold and clean it, and the ports in the head. I have not checked the cam lobes for wear. Was getting the Scbs error as well and after that the autobox would downshift with a big bang and only go as high as 3rd.

[@kennedysgarage3281]

Any faults being logged in engine management or EOBD ??

[@cebudave]

@@kennedysgarage3281 Yes P0101, MAF error. I've had it apart last summer and cleaned the inlet manafold, and egr system should have cleaned the ports in the head too but couldn't close the valves by putting it in gear as it is an auto and didn't want to drop any carbon into the engine.

[@kennedysgarage3281]

@@cebudave did you think the ports were bad ?? I have seen them closed down to around the size of your small finger 🤔

[@cebudave]

@@kennedysgarage3281 Yes they were quite bad as I remember possibly could fit an index finger in there.

[@kennedysgarage3281]

@@cebudave it sounds like it could be the toss of a coin as to whether you attack the ports or the rocker cover first 🤔 You might end up doing both 😬

[@joeliggy1]

Hi Peter, Great video describing the mazda 2.2 desiel egr system decoke.I believe my 2016 CX5 with 50000 miles has the same problem. removed my MAP sensor and that was coked up like your video. I am going to do the decoke , it would be great if you could tell me the list of gaskets i would require. Regards Joe

[@paulsmithson6866]

I'm now developing an anxiety about exhaust camshafts lol. I want to check mine, do the injector washers need to be replaced every time the injectors are lifted or only if there is leaking evident? Thank you for these videos and your positive attitude, they 'reduce the size of the monster under the bed'.

[@kennedysgarage3281]

😂😂😂 Replacing the camshaft is a little daunting but very doable. I replace the injector washers every time I remove the injectors. They come in a set of 5 washers and are very inexpensive. But can save a lot of heartache if done early. I’m glad you like some of my videos , cheers mate 😉🙏🙏🙏

[@wackey3455]

Cracking video Peter dont think I be buying one of them type of cars in the near future. It might be ok if youa a machanic and you can fix these big jobs your slef and don't forget hunting down the problem very time consuming.. No No not for me Peter wouldn't know where to start with that job. Great video hope you do part 3

[@kennedysgarage3281]

Part 2 will be uploaded as soon as I get parts after the holidays 🙏👍 Happy new year Wackey 😉👍

[@johnbickle4654]

Another great video peter thanks for sharing .

[@kennedysgarage3281]

You are welcome John thanks for taking the time to watch & comment. Happy new year 🙏👍

[@johnbickle4654]

@@kennedysgarage3281 same to you peter thanks again.

[@experience787]

Peter, Please read this, I found your video very relevant and satisfactory! I've the mazda 6 2.2 diesel bought being Japanese and cool shape, drove about 15K and it's 129K now but all a sudden this traction control light followed by engine check light; P0101 code; reset by many mechanics then did clean whole of intake manifold including EGR & Throttle Body spent £300 (Mazda was asking £1000 for it) on this job.... Changes the MAF sensor also, Fault still there doesn't go away, it drives normal all this time, my question is as this job to fix gonna cost even more and more, how about keep driving and ignore the light... If so what harm can it do?, though the mechanics here says it's fine to drive. Awaits Your reply.

[@kennedysgarage3281]

If you decide to check you exhaust camshaft for wear and then decide to replace it, it will be quite expensive. But definitely worth a look, it takes 2 / 3 hrs to remove injectors & rocker cover 🤔🤔

[@IRTEHLEETOKNPBB]

Great Video! Super informative , well filmed and made. very good job and thanks Peter

[@265justy]

They would be a great car only for the DPF having knock on effects. Driving Mazdas all my life. Had only one diesel outa them all. A Mazda 3 1.6 diesel. Same engine as a Focus apperantly. (PSA)... Gave DPF trouble. Went back to petrol due to my short work commute. Mazdas petrols are reliable.. Never trouble..

[@kennedysgarage3281]

I believe petrol are better overall 🤷🏼‍♂️🤷🏼‍♂️ I do very little repair work on them 🙏🙏👍

[@TheMattyholt]

Brilliant work👍👍

[@kennedysgarage3281]

Thanks Matty I appreciate the view & comment 🙏👍

[@lukaszteplik1922]

Hi my mazda 6 2.2 skyactive broken down. I could not start it again but i did finally Now is running Well but mass air Flow in data is 0.6 g/s do you think the carbon build up in intake? Cheers

[@kennedysgarage3281]

I would say yes, the intake manifold and ports are blocked. Those intake numbers are too low 😬😬😬👍

[@lukaszteplik1922]

@@kennedysgarage3281 Thank you very much

[@rollandohsughton3214]

Hello, I recently accrue a Mazda 6 diesel turbo I got the smart city braking light on and engine check light on. I’m in Jamaica so it’s hard to find a mechanic that understand the system. Need help or advice

[@kennedysgarage3281]

Hi Rollando, the best advice I can give is to watch the 3 videos on this repair & then check the items that I replaced. Also check intake manifold for carbon buildup & replace injector seals when checking camshafts 👍

[@nmalik88]

Thanks for sharing, my car having same issue, mazda cx-5 2.2 skyactiv-d, p0101 error it only comes up when i keep the rpm to 3k or higher for few mints and take foot off the gas, these traction will tyre waring light scbs light comes on and reads error P0101, If i keep driving on low RPM it does not come on, Also i get occasionally P258B code vacuum pump error, Do you think vacuum pump error is coming up because of low air flow? Or low air flow p0101 error coming up because of faulty vacuum pump? Thanks 😊

[@kennedysgarage3281]

No. You have 2 separate issues. The vacuum pumps fail on this model also, but there is a recall on them and the dealer sells pumps quite cheap around €150 On the air flow issue remove the intake manifold and clean it and the intake ports in the cylinder head before thinking about a camshaft problem 👍👍

[@nmalik88]

@@kennedysgarage3281 thanks for getting back to me, i'll find some one who can do intake manifold cleaning for me, and will get the vacuum pump at the same time, hope cam is not effected, :) 😀

[@dmc_77]

@@nmalik88 hi did you find anyone to clean the intakemanifold for you? and how much was the vacuum pump?

[@nmalik88]

@@dmc_77 no i didn't get intake clean yet, as i know some one who have same problem p0101 error and got intake cleaned but still getting same error, i left the for now and focusing on small bits first, Vacuum pump i bought it off Ebay genuine new for 200 and fitted it my self,took around 2 hours,, mazda dealer price is 268 for pump Are you getting same problems p0101?

[@Ian-kw3iz]

I have a mazda 2016 2.2d low mileage,I have a misfire only around 1700 rpm, no codes, good mpg, runs well. Misfire is noticeable at low speed in gear however i can re-produce the fault stationary. MAP & AIT cleaned, not too much carbon, MAF cleaned - Any ideas where to look. Thanks

[@kennedysgarage3281]

I would think it could be a faulty/bad injector. I have seen this quite a few times recently 🤔 Any thing else that I could suggest would affect all 4 cylinders other than engine internals (intake/ exhaust valves or piston rings) it could be a good idea to do a relative compression test before removing the injectors, just because it is very easy. Hopefully this helps Ian 🤞

[@Ian-kw3iz]

@@kennedysgarage3281 Thanks, it seems strange why it only does it at around 1700 rpm, wouldn't a faulty injector show up on live diagnostics I have a Thinkcar diagnostic reader. Might see if I can monitor the injectors and maybe some injector cleaner.

[@kennedysgarage3281]

@@Ian-kw3iz the electrical side of the injector can be monitored by engine ecu & then you can see that information via scantool. The only way of monitoring flow is via crank position sensor, but it might not be fine tuned enough to see a slight misfire. Now this is only just my thoughts & I could very well be wrong 🤔

[@alinmanole-x1q]

hi, I have a mazda 6 2.2 diesel from 2015 which when the coolant temperature reaches 70 degrees celsius gives me error P0488, do you have any idea what it could be

[@kennedysgarage3281]

P0488 is for EGR throttle range / performance, the obvious answer would be most likely the throttle body is very blocked up with carbon limiting it’s range of movement 🤔 I would suggest removing the intake manifold and doing a carbon clean 🤞🤞

[@alinmanole-x1q]

@@kennedysgarage3281 hi, I also cleaned the egr valve and the throttle, I recalibrated the egr valve, I can't figure out what it could be, this happens when the antifreeze temperature reaches 70 degrees, then the malfunction starts and the car grinds very loudly when changing gears, and on the scanner it gives me the code P0488 and U0401

[@kennedysgarage3281]

@@alinmanole-x1q just to verify, did you remove the whole intake manifold & clean the ports ???

[@alinmanole-x1q]

@@kennedysgarage3281 yes

[@alinmanole-x1q]

yes, I took off the intake manifold, egr valve, throttle valve, I cleaned it and after about 2 weeks this error appeared, I was thinking about the solenoid from the egr valve cooler bypass, I'm still going to dismantle that solenoid to see what resistance it has because it doesn't I'm sure if it works as it should because when I have an error on the board when I try to test the egr cooler bypass valve it tells me on the tester (test aborted not supported)

[@RohitMishra-vl1vp]

Hi Peter, Where are you based. I have a few issues on my Mazda. Was wondering if you can fix it. I am in Dublin

[@kennedysgarage3281]

@@RohitMishra-vl1vp we are based in the Waterford region, we have quite a few that travel from Dublin down and also have a few Dublin recovery services if needed. Fixing it wouldn’t be any issue, just search kennedysgarage.ie 😉

[@habs4620]

Peter thanks for all the info. Sorry if I didn't catch it but what are the reasons the cam shafts fail?

[@kennedysgarage3281]

Carbon builds up in the crankcase due to injector sealing washers falling. This carbon then blocks the oil strainer & a little steel pipe that sprays oil down onto the exhaust camshaft. If this little pipe gets blocked it causes the camshaft & followers to wear. Hopefully that makes sense 😉😉

[@kevinpalmer7452]

Great video Peter very much looking forward to part 2. The volumetric efficiency of that engine was on the low side was it an intake or exhaust problem turned out to be both and it was brilliant the way you narrowed it down to those worn cams.

[@kennedysgarage3281]

There wasn’t anything fancy going on other than experience on this engine type. I have made exhaust camshaft replacement videos on these before. But it is a hand one to know about Kevin, air flow issues seem to be a big problem. Happy new year 🎉🎉🙏👍

[@kevinpalmer7452]

@@kennedysgarage3281 really enjoy your videos and your very good at what you do happy new year Peter.

[@the_retired_mechanic]

Peter the master mazda technician....has a kind of ring to it. Great video and kept me spellbound trying to keep up with you. Do the cams wear due to poor oil changes or high milage?

[@kennedysgarage3281]

I probably should have shown this but normally I find they wear due to a little oil pipe/oil sprayer getting blocked over them due to carbon blocking the little spray holes ( kinda like a screen washer Jet) but not in this case. Check out the video link below?? Happy new year Chris 🎉🎉👍

[@kennedysgarage3281]

kzbin.info/www/bejne/Y5bSfH1mj9l8baM

[@marion1600]

Good find! What made you eventually pull the valve cover and check those cams? I guess in-cylinder pressure waveform would've revealed this as well?

[@kennedysgarage3281]

Hi Marion, in cylinder pressure would have found it but I’m not very familiar with it & thought I’d have the cover off in the time it would take me to get a waveform & make sense of it. I have seen this before which helps 🙂check out the video link below 👇 kzbin.info/www/bejne/d6DOeauPpJV4eJo

[@Servicestopltd]

Nice find well done

[@kennedysgarage3281]

Thank you so much 🙏 A chap said to me one time’ something has to give & it wasn’t going to be him’🙂 And as you well know the motor industry does this to us 😂😂

[@johnfittis5764]

What a great diagnosis, crazy that a camshaft can wear that badly. Mazda are not what they used to be🙈

[@kennedysgarage3281]

There is a little pipe over the camshaft’s that sprays oil onto them. This can become blocked but on this occasion it is good. But it does make you think 🤔 Thanks John 🙏👍

[@chrisc5739]

Hello Peter, you have a new subscriber 😉 I've just watched 3 or 4 of your other videos and I like your format. You come across as a no bullshit, old style mechanic who realises that we aren't just living in a 12V world anymore (unfortunately 🙄) P.S. The last video I watched was the Vauxall engine change in which some clever clogs didn't put the crank sensor pick up ring on the replacement engine 😬 (Ouch!) Anyway, did I spy the NSF of a Mk1 Escort? Would be awesome to do a video of it.

[@kennedysgarage3281]

Hi Chris, thanks for subscribing & I’m glad you like some of my videos. I’m finding that it is the small detail that gets overlooked at times & can take so long to get resolved (ie. The Astra crank sensor pick up ) And yes it is a mk1 in the corner & I’d love to do a few videos on it but I haven’t gotten around to in the last 20 years so it could be unlikely . Something that I would love to do though 👍👍

[@strdy73]

Hello great video like everyone I've watched from you! I have the same problems with Mazda 6, 2.2D, AT, 2015 150.000 KM traweld . Have you ever had problems with the MAF sensor only? That you could only change the sensor and it was O.K.? Regards Andrej

[@kennedysgarage3281]

No, the air flow sensor doesn’t fail in them, your problem is going to be 1. Intake manifold blocked 2. Exhaust pressure sensor A or pipe blocked 3. Exhaust camshaft 4. Hydraulic tappets Any of these could lead to the Dpf getting blocked too 🤞👍👍

[@michaela-f9389]

Well done Ken. Happy Christmas. I just bought a cx5 2.2d with 180000miles on it . what do I need to change to make the car last another 100000miles

[@kennedysgarage3281]

For now just keep the engine oil and filter changed regularly. And it might do no harm to make sure the injector nuts are tight 🤔

[@kennedysgarage3281]

My name is Peter

[@michaela-f9389]

Merry Christmas Peter. you are a good man

[@kennedysgarage3281]

@@michaela-f9389 thank you Michael 🙏

[@alexanderstefanxandraswedi5835]

Good job sharing

[@kennedysgarage3281]

You are more than welcome Alexander 🙏😉

[@ciprianraileanu4402]

Please Tell me you are in UK

[@kennedysgarage3281]

I’m in Southern Ireland 🇮🇪 🇮🇪

[@simonsherwood7169]

More and more chocolate parts in many of these engines now even with so called proper servicing

[@kennedysgarage3281]

Yes Simon I totally agree, they are quite soft nowadays 🤔 You can’t even lean in on an engine without breaking something 😬👍👍

[@nicholasgoncalves5794]

Enough to write the car off thanks

[@kennedysgarage3281]

@@nicholasgoncalves5794 possibly 😂😂