P0128 Explained - Coolant Thermostat Temperature Below Regulating Temperature (Simple Fix)

[@fgrimm3]

really easy to understand, thanks

[@fprice212]

I just started using the fixd gizmo and I absolutely love it! Easy and quick to use. Amazing little thing

[@fixdapp]

So happy to hear it, F! Thank you so much for the kind words and using FIXD :) Happy and safe driving!

[@gcuomo92]

Suuuuuper simple, thanks for the info!

[@fixdapp]

No problem, glad to help!

[@robertmccabe2993]

That's what i did got that code changed it and need to put more Antifreeze in thank you

[@tommyworx]

I am getting p0128 on my 07gl450. I noticed radiator fluid dripping on driveway as well. Thanks for the info...best place to buy a thermostat? Will fixing this clear my engine light that’s currently on? Thanks again for the help. I just subscribed...Boom!

[@crissotosj5983]

awesome explanation for those who don't know about cars

[@fixdapp]

Glad we could help!

[@lolah3838]

Got this code today. Going to dealer to see what's up tomorrow.

[@valleyscharping]

For future reference, never go to the dealer.

[@ChrisAhSnap]

Great explanation thank you, made me feel a lot better. Thanks for the video

[@mohammedalhunaity318]

Hello, I suffer from a lack of water in the car, and there is no leaking hoses or radiators, does the thermostat do that in case it is damaged, as I notice a sudden drop in the temperature of the car and it did not rise from its normal position to 80C when Stuck Open Thermostat is to cause to lack of water , the weather is summer ??

[@portagepete1]

Sounds like thermostat needs changed, common problem because It's all cheap plastic.

[@ryans413]

Okay when I’m driving on colder days it hovers around 77 degrees Celsius. Then it always trips the light. If the cars idle and not moving for say 5 minutes the temperature goes up to the normal range 90 degrees Celsius. I have good heat in the cabin I can put my hand ontop of the engine and not get burned the hoses feel nice and hot so do you think this is faulty temp sensor. It’s strange when moving it dosnt heat up quick enough when parked and idling it dose.

[@markwright7058]

I’m having same issue with my Ford Fusion 07 any ideas what the exact problem could be ?????

[@flaknastie9608]

What if the thermostat was replaced 6 months before getting the check engine light and code p0128? Can it be something else?

[@Gwyntomology]

What's it have to do with O2 sensors?

[@kelvinmpatterson]

Right 😅

[@kimchee94112]

How many driving days for P0128 to be gone?

[@Ej6daniel]

Thank you so much man!

[@Dean-gi8ie]

Mine says high severity? Its a pontaic grand prix whats the problem to fix there ?

[@MuddieRain]

I have a code p0128. Can I drive far in it?

[@robertokristen8316]

if this engine check light code was not repaired for long time, what will happen ? i hear loud noise after 20 - 30 min of driving which is increased by pushing on accelerator !!! is it related to unrepaired coolant thermostat ? or something else ! in dodge durango 2012

[@jdjd2059]

In my case Opel Astra 1.4 Turbo A14NET, P0128 was the only code, Thermostat was faulty indeed, but dash prompt messages ENGINE GOT TOO HOT so car ECU had to shut down the A/C. Once I open the hood, noticed the fan was constantly working on full, which indicates a CRITICAL problem, the water were not extremely hot, it's because of the faulty thermostat resulting in no water circulation. Button line I want to say this error code can be CRITICAL and severely damage the engine.

[@mitchio83]

Did the temp gauge show it was hot before shutting down?

[@jdjd2059]

@@mitchio83 yes

[@pepper2872]

i’m in florida so i should be fine, that means something else is wrong?

[@JBreezedorsett]

THANKS! MY ISSUE WAS I HAD NO COOLANT AT ALL, FILLED IT UP WITH COOLANT…CLEARED THE CHECK ENGINE LIGHT AND IT HASNT CAME BACK ON…

[@manuelnajerajr6724]

Did it work

[@scottmantai8643]

That was a great video. Explains it clearly and had a few funny jokes in there. Thank you

[@jesuschavez5457]

I changed the thermostat and the coolant sensor on a 2012 Chevy Malibu LT and still get a check engine light and no no reading on temperature gage

[@randyu8688]

Did u fix it ?

[@NewOrleansIGotUs15]

Me 2

[@NewOrleansIGotUs15]

​@@randyu8688going through the same thing right now

[@andrewarchuleta3551]

Thanks!

[@BruceWillisiscool]

Also if you replaced your OEM thermostat with a race thermostat, that opens at 160 instead of 180 you will get a code. Replaced mine with a mishimoto amd got the code.

[@joeDaShow04Blows]

Thanks bro

[@showrunner2183]

So is it the oxygen sensor or the Thermostat?

[@kevidnineteen255]

Thermostat. A bad O2 sensor won't throw a P0128.

[@kevidnineteen255]

Thermostat.

[@banegladesh76]

So how much is it to fix?

[@mikemarashdeh114]

got check engine light (p 0128) , replaced the thermostat but the check engine light still on even after driving the car for around 70 miles (coolant level is OK and cooling sensor is OK also) is that normal ? Yeah, the car is 2014 Dodge grand caravan

[@imholt8184]

I have the same problem what did you do?

[@fresno93703]

When you replace the part, always make sure to reset the ecu by removing the negative front battery for 5-10min and your check engine code should be off and code should be removed.

[@randyu8688]

What did you do to fix it ??

[@fdamien80]

To anyone who’s automotive educated; If a radiator fan is constantly running, wouldn’t a properly working thermostat opening and closing help regulate the temperature to its operating state thus making a running fan not an issue?? Only wondering bcz I keep having this code pop up occasionally. Looking at date, code came on when engine was at 165F and vehicle was still in a closed loop. Rpm was around 3400 when the code was capture. Currently pending a thermostat replacement so hopefully that solves my issue.

[@gracielazamudio9965]

Help me out here y'all. I got this code on my code reader but my engine marks "overheating." What does that mean? what can I do to fix it?

[@gd2860]

Then its the opposite. Its stuck in the closed position.

[@x-man5056]

ALL OBDII electronic fuel injection vehicles run in "OPEN LOOP" when they are COLD and "Closed Loop" when they are warmed up. You got it backwards.

[@the_batmobile0.4]

Hi I recently installed a catted downpipe and now I have this code ...help

[@fixdapp]

p0128 is for coolant temperature below thermostat regulating temperature. Most of the times this is caused by a thermostat sticking open or a faulty coolant temp sensor. This issue can be related to other issues, however most of the time it's a simple fix. A good indication of your thermostat failing is the temp gauge on the car not reaching operating temperature, heat not working well etc. If your in-vehicle temp gauge stays on the lower end while driving this is a good indication its a thermostat.

[@pepper2872]

what if your car is overheating?

[@zoologybro4405]

Your thermostat could be stuck in the closed position, which not allow the coolant to flow into the engine.

[@punkmanmatthew]

I like the movie clips.

[@Dean-gi8ie]

Me and my uncle put in a bew thermostat sensor or temp sensor i believe

[@brianskinner7966]

I have a 2012 Chevy Sonic. I’ve changed thermostat, temp sensor(X2), new radiator, radiator sensor, coolant flush, check wiring, tested fans and still the code comes back.... my last resort is to go buy dealer thermostat thinking autopart stores China products are faulty.

[@lakerphan17]

Did u figure ur problem out having similar issue

[@brianskinner7966]

@@lakerphan17 yes! I saved the original parts and remove the aftermarket thermostat to compare them. The original was totally different from the aftermarket one.. I cleaned the original one up with a wire brush and brake cleaner... let it dry and reinstall it(original) and have not had any problem since but now know that if something goes wrong with the thermostat that I will be taking it with me to the dealer to get the exact same one. I hope this helps you. Good Luck

[@BasicMuzik]

On the 2003 Cadillac cts the thermostat is a $1,200 fix, or doing it yourself is 5 + hours of HELL

[@GORT70]

2016 fiat 2.4 is isn’t that easy to work on….

[@mirnesadnan801has5]

My dash says engine, hot AC off and the fan. Keep running after I turn off the car even when the car is cold the fan will just kick in soon as I start the car.

[@kentdavies1988]

Nice video but you're mixed up on open vs. Closed loop. All cars start off in open loop and after reaching operating temperature they go into closed loop

[@1989RealRell]

Okay so I changed my thermostat to purposely run cooler and now the engine light is on because of it!

[@deedeewinfrey3181]

I want one of those shirts

[@mikemad9068]

Leaks

[@dondc2827]

I'm getting this issue cause it cold as hell

[@nathanbell7435]

Please remove the pointless movie clips. It makes how to videos painful to watch.

[@Chris.Carpenter]

THIS

[@lindachen5179]

Come now. 💞 A bit of humor, lightness, editing and character-appreciation for a fellow human who so generously provided some useful information. Cheers to 2024. Thank you for making this video and making this code a bit less scary. I appreciated especially office space and the office references. 😊✅📝📄

[@kurtiscal3msetccdwell618]

When I see this code the first thing in my mind is "what is the thermostat regulating temp? Are we talking 180 or 190?" a better way to of worded this is "engine coolant temp is out of thermostat regulating temp."

[@mitchio83]

actually that makes no sense.

[@kurtiscal3msetccdwell618]

@@mitchio83 You're a fake account so your opinion is fake.

[@hieunguyen4804]

funny

[@ahmadmohd1504]

I throwed away my car thermostat from many years in camry 2azfe

[@d.cynthia6307]

He's turned this into a clown comedy show 👎🏼👎🏼👎🏼👎🏼👎🏼

[@alexander.chance]

sure it's easy to find the fix but the problem is getting to the actual thermostats on a 6.4 l Ford diesel not fun