Mazda CX-5 P0126 Coolant control Valve Replacement

[@badcrcz]

Great vid. My niece's 2023 has the P0126 code and it's only one year old with 15k miles. Read the code and saw it was insufficient coolant temp. I don't know what the number is on the valve, but the ZA is the fixed version, so I'm baffled as to why Mazda is installing the Z defective valve on a 2023 when they've known about this issue since at least 2020. When we were looking into new vehicles for my niece she ended up deciding on this CX-5 and the more I read about the issues the more I don't like it. To me it's insane to have that huge plastic computer controlled monstrosity in place of a mechanical $10 thermostat. The cheapest I can find that valve is $354, plus at least $120+ for labor, and whatever diagnosis costs. At least her car is under warranty and from what I'm reading this is covered, but anyone out of warranty that has to fix this at home is looking at $354+ and a couple hours of their time and the cost of new coolant. A simple mechanical thermostat would be 10 bucks and on most cars is not that difficult.

[@Gapeach1970]

Just had same issue for my 23 CX-5

[@badcrcz]

@@Gapeach1970She took it to the dealer and they wanted to charge her $190 for diagnosis and said "maybe it was covered under warranty." She called me and told her to tell them she isn't paying a dime to diagnose a defective valve that shouldn't have been installed on the car since 2020. I told her to also tell them she wants a rental car to get to work the next day since that was in her dealer warranty. She called me back 10 minutes later and said they told her to drive it home and they would have it picked up from her work the next day and bring it back after repairing it. They did, and it was all covered under warranty. The invoice showed $705 total, lucky she didn't have to pay. So for anyone that gets the runaround from the dealer, stand your ground. Also I read at least one post where the dealer told an owner they couldn't cover it under warranty unless the engine light was on, even though there's a code history stored. My niece's light went off for a half a day then came back. So to be on the safe side I would make sure the light is on when you bring it in.

[@cashonly2539]

Is this under the 3-year or powertrain warranty?

[@badcrcz]

@@cashonly2539 From what I read on reddit it's covered under the powertrain warranty. I also read at least one person that said the dealer said it wasn't covered because the warranty said "thermostat" and the thermostat is only one component of the coolant control valve, and it's the housing that's the defect. Almost everyone got it covered unless you're out of warranty. I didn't read the actual warranty since it was covered without an issue.

[@cashonly2539]

@@badcrcz This happened to my 2019 CX-5 about 6 months ago. After I cleared the code and it never came back on until recently. I cleared the code again and the CEL stays off so far. The car runs smooth otherwise. I recall both times the light came on when it just warmed up and I got up to highway speed. Thanks for the info. I won't clear the code if it happens again.

[@SatanicTatertot]

Just used this video to replace mine. You're a life saver

[@DoubleE-2250]

Did replacing the valve resolve the P0126 code?

[@SatanicTatertot]

@DoubleE-2250 yes, it's just a ridiculously expensive part.

[@MichaelBrincat]

Really enjoying your content. Looking forward to more CX-5 videos. Yours are by far the best CX-5 repair tutorials I've come across. I'd like to see videos on intake valve cleaning and a discussion of common issues to watch out for. Keep up the great job.

[@yuripolkavich7469]

Most comprehensive video I've seen yet. Great job!

[@JackStrangelove]

Thankyou for a great instructional video. I'm glad we have people like you out there willing to take the time to make this sometimes difficult life easier.

[@bamaluv]

Best car repair video I've ever watched. Very thorough! I have to do this on my daughter's car ASAP.

[@garyd5049]

Well done for the explanation. I have a Mazda 6 2.5 still under extended warranty which Mazda UK are refusing to honour as there is no TSB recall in the UK.. They have quoted me £900.00 to replace this unit which has the same symptoms. Considering the part is about £180 and 1.5 hours work. (As on TSB). So very disappointed.

[@jakebarnhardt8238]

Do you have a link for the part? I've only found it costing 700$+ cad

[@donnguyen1516]

You did a great job of identifying all needed tools. The removal and replacement of the CCV was well demonstrated. Please add more content whenever you can for CX-5.👍

[@richshaffer985]

Thank you for your detailed information about this repair. Your video skills are exceptional showing every step in specific detail.

[@rogueone9214]

Thanks for the info great job. My daughters 2016 Scion IA is a Mazda 2 what surprises me is all the plastic parts on it. I took if the intake to get to a $14 pcv valve. Talk about smart engineers. . God Speed

[@know916bound]

At least japanese plastics don't corrode the way american and german plastics do. Plus Almost all modern econo vehicles are designed similar

[@gdog1900ify]

You are awesome. I watch a lot of KZbin. Videos of auto work being performed and yet have I seen anything Above this !!!! Man I am letting you know you make KZbin a great place to learn from thank you so so much ❤😊🎉 you saved me a lot of $$$

[@MikeMcardle-x9b]

Thank you, that's how a video should be done!

[@СтефанСерафин]

Man you’re simply the best)) Thanks a lot for this detailed review. You saved my life and my money. Greetings from Ukraine❤

[@khendrdik]

I'm about to do this repair myself on my 2021 so thank you much for this video. I chose to replace the sensor with a new one as well just to be sure! Cheers!

[@ghost2989]

Thank you very much. You were very helpful

[@Knottypine79]

Thanks for this video. I have the same issue with my 2019 Mazda CX-3, a few months past warranty. Got a scanner and had the P0126 code. Also my coolant temperature is showing around 150F while driving. So looks like I'm in for a bit of a repair. I'm not mechanically inclined but this was very helpful, I'll probably give it a go. The CCV is quite an expensive item for what it is.

[@chinedooo]

you don't have to replace the whole ccv. You can replace just the thermostat inside of the CCV according to the latest service bulletin static.nhtsa.gov/odi/tsbs/2024/MC-11003350-0001.pdf

[@Knottypine79]

@@chinedooo Thanks. Mazda wasn't very nice about the whole thing, so won't go back there. Instead I traded it in and am now a Toyota customer.

[@JohnFrytag]

Another great vid. Looks like you’ve done a hundred of em.

[@ChicagoRob2]

Very common problem on 2019s. Ours wouldn’t go above 150 degrees. It was covered under warranty. I’ve read that Mazda got smart and went back to mechanical thermostats on the most current models.

[@pferris3591]

This was a good video. Clear explanations, well framed video showing the subject matter, the engine bay was well lit and it was oddly refreshing to see a car engine that looks like it's actually been driven! Kudos to you, well done. Question 1) Would you recommend replacing the sensor mounted to the control valve with a new one at the same time as getting a new control valve? The 19mm one? Question 2) Have you found aftermarket parts (in general) to be of good quality, or is this a 'buy from the dealer' sort of part?

[@TavosMr]

Very well explained video. Keep going. 👍👍👍👍👍

[@joebuck4618]

nice job. very well presented.

[@sstocker31]

Great detailed vid...Thanks a bunch!

[@lawrencechang3547]

Excellent instructional video

[@tarpatel]

wow, excellent video!

[@wcs2410]

awesome video ....great job thank you.

[@Birdmacher]

Thanks for the vids! Could you do a PCV valve check/replacement video for the 2.5/2.5T engines?

[@Aiasdzxc]

You saved my nerves. Thank you very much from Russia

[@hrmfa]

Great video. Much appreciated 👍

[@LeonShipard]

Excellent video. Just had this done under warranty by Mazda Australia (Mawson Lakes SA) on my 2020 CX5 GT Diesel 60,000Km. Though spewing coolant out of the overflow tank onto top cover of the engine. The radiator was virtually empty there were no warning lights on the dash display. We were towing a small camper van out in the country when this became an issue and obviously no water in radiator would quickly lead to catastrophic engine failure. Can maybe a pressure sensor be incorporated somewhere for the engine management system or maybe just an independent warning light? Very interested to hear your views and suggestions

[@gamersunite7968]

Just got this code on my car today. I'm 7K out of warranty, lmao. Might as well learn how to fix this.

[@roonbooks3227]

Im in sask. Canada.i just called mazda and yes, they do sell just the rebuild kit which only includes ,i think 3 parts ,one being a gasket. The parts are $89

[@juniorjay001]

Great video, thank you! How much could I expect to spend pay a mechanic to do this for me?

[@marktwo3160]

Mazda gives you a free fix replacement and extended 15 year warranty. I just got the letter in the mail today. However my 2024 does not have this potential problem. Or it at least has the new ''ZA " new FIXED PART number

[@pablocabanasmiranda6170]

Thank you bro🤜🏽🤛🏽

[@stefanmohler2994]

Great video! I’m concerned about my 2020 CX-5 Sport. I found the coolant to be just above “low” line. Also, when driving downhill on cold days the coolant temperature drops.. sometimes all the way down to 1/4 temp. Is this an indication of failure? I still don’t have a check engine light. Car is @ 52,000 miles.

[@cormaro13]

Yes your car uses coolant , fill it up lol and no it's cooling down cause it's not being worked, if you're not being used there's nothing to cool down lol

[@arthurfernandes2402]

It’s normal to top up your overflow because it’s not pressurized. Just make sure to top off the overflow when the engine is cold.

[@stephenbay9564]

This video is GREAT. I like how you stepped through it in the detail that you did. You said you did many of these. As you see it, does this happen to most of them, and it's just a matter of time (when)?

[@CARDIAXPLAYS]

It does happen quite a bit. I replaced another one on a mazda6 just a few days ago. luckily mazda is ditching this coolant control valve for a good old fashion thermostat on newer models with the skyactive engine 2.5 non turbo engines. The only models that still comes with this coolant control valve is in 2023 CX-5.

[@stephenbay9564]

@@CARDIAXPLAYS Thank you for sharing that. Could I ask one other thing? How many of these need their intake valves cleaned? Have you seen many of these? I have a '21 non-turbo. So I have the question in my mind as to how long it's going to be until they have to be cleaned. Curious if you know. Please share....

[@CARDIAXPLAYS]

@@stephenbay9564 We do clean the valves and offer our customer the service every 25000 miles. we spray a fine mist of a BG cleaner into the intake manifold while the car is running. it takes about 30 minutes for the service to be performed. since these engines are direct injected those valve get super dirty real quick. I've also seen these engines with over 200,000 miles still running strong and the customer has never done the service.

[@stephenbay9564]

@@CARDIAXPLAYS Hi again! Listen, I just went to the BG web site and saw what they said to do with their cleaner, specifically on Mazda 2.5 non-turbo engines (like mine). Let me cut and paste part of the instructions here: "The adaptor will administer 22 oz. (650 mL) of cleaner in 25-40 minutes depending on engine vacuum. When supply tool is empty, close ball valve and allow the engine to idle for 15 minutes." AND, when that finishes, they say to use a 2nd 22 oz. of cleaner, assumingly taking as much time as the first. Total time there would be: 25-40 mins. + 15 mins. of idle......then 25-40 mins. + 15 mins. of idle. That adds up to the engine running is over TWO HOURS (in the shop). So may I please ask - Do you guys go that nuts?

[@CARDIAXPLAYS]

@@stephenbay9564 Hey Stephen. I've actually never read the BG Instruction on the site. I've been doing it the way the previous tech taught me when I first started at mazda. I was taught to put both cans in the BG device that delivers the spray into the intake. then once the container is empty let it idle for 15 minutes, It honestly takes about 1 hour. But thanks for the info. Ill for sure relay this info to my service manager to see if we can change up the process. Your the man Stephen. Honestly my favorite subscriber so far.

[@hoboholer]

can you see if we can swap over the thermostats that come on the newer 2.5 non turbo mazdas to the cx-5? it should be the exact same block so i dont see why it wouldnt be desinged in a way we could swap the parts out that are different.

[@amor091505]

Thanks for this video. Appreciate you and what is the average for this repair cost. Can you please let me know thank you. Have a beautiful evening.

[@roonbooks3227]

So now that we know the entire coolant control valve does not need to be changed....and only a kit that mazda sells which includes thermostat,and a bunch of plastic parts like thermostat housing etc.....what i want to know is ....what exact part is failing?

[@oddballmedia]

No oil on the big seal and engine block before mounting the coolant valve?

[@shtookaralph5205]

Question for you, how did you get certified in mazda?

[@CARDIAXPLAYS]

You just have to work for a Mazda dealer for certain amount of time as a technician or lube tech And also take classes online and in person with Mazda instructors. Mazda provides all the training as long as your working for them.

[@TurkeyBaconSandwich9er]

Did they fix this on the NA ones 2021 and up?

[@seanlujan107]

How much coolant did you have to add after draining it

[@zerkfiter]

What mileage range are you seeing these fail? Certain years?

[@nanoboost7435]

CX5 2013 is spewing coolant, could this be the coolant control valve? (it is summer and temp is 34 degrees Celsius) the cx 5 doesn't have a dashboard temp sensor. So car has spewed coolant twice but with 400km interval. Any ideas?

[@kevinhancock4064]

In your opinion what is the best way to find out if my coolant bypass is bad and/or egr cooler ? 2013 2.2 twin turbo ty

[@dherick1497]

I’m trying to replace my coolant reservoir but there’s no videos out there for a sky active 2.0

[@beka.m.3490]

just gave us any idea why is it so faulty ? what does it make it bad ? maybe any reason for lets say quality of fluid or don know what else ?

[@haroonleon5547]

Is this issue causing LIMP MODE? Wish you answer , !?

[@keizomatsuzaki]

i thought temp sensor was bad and the old housing and gaskets looked great. it would be great if you could show what was wrong with the housing.

[@CARDIAXPLAYS]

I think I can make a short video of how the valve works and why the valve fails.

[@kevinhancock4064]

​@CARDIAXPLAYS I'd like that to .....atm my 2013 is giving me overheating issues ..I'm currently flushing with treatment and ironised water even ordered a new rad in case I need 1 as my lower hose wasn't getting warm and didn't feel like much if anything was in there..fans not kicking in at temps . My thoughts was coolant not reaching thermostat that's a new oem 1 I put in ..new oump to ..and not truly hitting the coolant sensor to activate fans

[@Srt8Jeep]

This went out on my 2022 Cx30. Luckily under warranty the part is $450!!! Do you know if they did anything to improve the part? Afraid it will just break again.

[@genglai4526]

just back from dealer, same problem, 2022 cx-30 with only 10k miles. 😅

[@ChicagoRob2]

Ours went bad at 11K miles.

[@derrick-is-dnice]

What model year is that car? Is it a well-known problem?

[@caseyalexander2244]

Is this valve used instead of a thermostat?

[@CARDIAXPLAYS]

YUP! Its an electric thermostat.

[@SzechuanChickenDog]

Ehy does everyone say the cx5 doesnt have a temperature gauge? My 2018 non turbo grand touring had one and so does my 2021 turbo signature cx5. Im at 59k miles...have never had a slight cooling variance...never had a single issue with either vehicle. actually my rear brakes wore out way before the front on the 2018...bit still not til like 30k miles. So definitely wierd...but my 21 signature has original brakes on feont and back...i just bought them to to change the rear but havent fone it yet... basically just doing because i feel its time...they still eork fine....mine was made in japan. I wonder how many cx5 with issues are mexican...or Canadian....

[@DriftinDoug]

After reconnecting the battery do you have to reset the computer?

[@CARDIAXPLAYS]

Since the battery was disconnected for a bit you should be fine. the code should not be present. when I started the vehicle back up there was no check engine light.

[@RodelCruz-j3l]

Do you have the link where to buy coolant control valve?

[@CARDIAXPLAYS]

I do not think this part exists aftermarket. It would need to be purchased from a Mazda dealer.

[@eddy009shegzy4]

I have a mazda cx5 2013 model it comes up with coolant high temperature 🌡 and engine service light required ..it drives at 80mph then starts losing power .Please help me ..what do you think is the problem ?

[@cormaro13]

Why not take it to a mechanic lol they can check the engine light and fix the issue cause it can be a bunch of things or just one, we're not looking at your car 😂

[@SzechuanChickenDog]

Head gasket? Check the oil dipstick for milky stuff...

[@pto1975]

Should we change all the hoses and the coolant sensor at the same time ? How many miles on this car ?

[@CARDIAXPLAYS]

It all depends on the condition of the hoses. this vehicle was right under 60k and the hoses still looked to be in good condition.

[@pto1975]

Thanks . Please make more videos on cx-5 . You are the best 🎉🎉

[@vegaq6586]

I got this p0126 (engine too cold) at 55k miles. Cx5 GT 2020

[@jvvreckz3009]

Does this work for a Mazda3 2021 2.5

[@jayrocc5873]

I have a CX-5 2020 Mazda and have had 4 thermostat replaced I'm getting really sick of this I wish I would have known about this issue before I bought this like I literally just got it out the shop Tuesday last week and now I'm having the same issue again

[@mequiardonraudales8956]

The part is from Mazda auto parts?

[@Surpriseattackninja]

Mine just went on my 2018 at 197k miles. I got a P2B61 code because mine, unlike 99% of every other control valve is stuck closed instead of open so of course I can’t drive to work until I fix it 😂

[@MrKevinmer]

Donde lleva el termostato?

[@billydog1512]

How many miles does a car have on it?

[@CARDIAXPLAYS]

I think it had a little over 50'000 miles.

[@zetnaj3328]

Como sabias que se debia cambiar esa pieza?

[@Ahleen0]

ماهي المسافه اللتي يتم تغيير زيت القير عندها

[@thetechlibrarian]

30k diffs. 50-60k trans I believe

[@tsunami770]

The transmission breather line...

[@Lima-Hi]

Don’t you need to bleed the radiator

[@CARDIAXPLAYS]

yes. I ran the vehicle with a special bleeder funnel. you can purchase one of these from amazon. You can still do it without the funnel. It just takes more time and you might make a little mess.

[@Ahleen0]

عمل جيد

[@oddballmedia]

The Coolant control valve is faulty on many Mazda models… and a new one is very expensive 🤨

[@JT-zy2ft]

Yeah my wife’s cx5 had the same problem and it was like $1k fix.

[@Ahleen0]

ام الاشتراك لاني املك cx5 ٢٠٢١

[@dogsday52170]

man what an unnecessary piece a BS contraption that thing is

[@aygeeninty771]

Just an fyi i found myself to be unsubscibed to your channel. I found myself unsubscibed to some political related content channels (right wing) recently too but why a car mechanic showing great Mazda support vids I wonder.😮

[@roostersideburns3440]

paranoia

[@cormaro13]

Someone needs to lay off the crack pipe 😂