How to: Fix P0128 Trouble Code Mercedes 2012 C250 1.8 Turbo Engine Thermostat Replacement
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- Опубликовано: 12 мар 2022
- The dreaded Check Engine Light! If you have owned a car in the last 20 years, you have seen it from time to time. In this case it was on my wife’s 2012 C Class C250 Mercedes with 1.8 Turbo
The Check engine light was triggered by a Engine trouble code of P0128.
According to the web:
“The P0128 code means that the engine coolant is not getting warm enough, fast enough. In other words, there is a problem with the engine operating temperature not being reached within a certain amount of time. The Engine Control Module (ECM) determines this length of time based on ambient temperature.”
Ok so we know what the code is, what do you do now?
I say we fix it! Swap one part and you get a new housing, thermostat, and temp sensors to remedy the P0128 code on the C-class.
I hope this video helps clear your CEL and gets you back on the road.
This should work for most ever C-class with the same engine (but don’t take my word for it, ask a technician if you aren’t sure)
Thanks
#mercedes #P0128 #diy 
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![How to Fix P0128 Engine Code in 3 Minutes [2 DIY Methods / Only $7.34]](http://i.ytimg.com/vi/AfDXh4cko84/mqdefault.jpg)
You just saved me $400, very helpful
You are a great human for sharing this with us. Thank you man!!! Concise, quick, informative. Well done.
Finally, a video that helped!
Thank you ,thank you , thank you . I'm getting an open circuit P code for the coolant temp sensor so your video shows me how to clear the path to it AND when I have to also replace the T stat I'll know how to do . And thanks for making it brief .
Great will try mine 👍
I can’t even get to the five bolts it’s painfully and impossibly hard to get the the thermostat without taking off more then he says
If you haven’t changed your oil filter housing gasket it may be a good idea especially if it’s leaking as well and is much more difficult to do I found corrosion inside of mine that need to be cleaned out in a coolant passage I think doing these two at the same time is a good idea along with an oil change because you won’t have to ever touch the cooling system again unless a leak on the radiator or a coolant hose occurs or the coolant expansion tank decides to fail. I’m going to do mine separately with some time in between to let the system flush itself with fresh coolant.
Great instructional video but it took me 4 hours to take off and put a new one on. Also I crack a small hose line which I have to repair because replacing is not an option.
I had to remove my whole cold air intake how did you remove that without removing the cold air
What torque specs did you use to tighten the Thermostat?
After replacing the thermostat, the engine light doesn’t go off. Will driving car help it reset?
Bottom part of intake was hard to get off, now its just sliding off after replacing the thermostat housing. Do I need to replace it?
how did you do it? did you use a mirror? please let me know which tools it's very hard to get to
Thanks for the video what are the 5 bolts to the thermostat housings torque specs? Thanks in advance
Sorry I didn’t include those , but Google search I did find them. I just don’t remember! Good luck
How did you get around the power steering line when pulling it out?
I didn’t remove the power steering line
After replacing the thermostat, the engine light doesn’t go off. Will driving car help it reset?😊
You’ll have to use a code scanner to reset the CEL
Is that same as code p0597? Mercedes coupe C250 2015?
Anything that is related to thermostat replacement
Is this related to p059800
I’m not sure. Really this is a thermostat replacement job. If thats your issue it should solve your problem
I’m not sure. Really this is a thermostat replacement job. If thats your issue it should solve your problem