Engine Coolant Temperature Sensor P0117 / P0118 | How to Test and Replace

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In this video I go through the steps on determining why you may have codes p0117 or p0118. It's easy enough that any one can perform at home. This was performed on a 2010 Subaru Impreza non-turbo. Check with your vehicle's repair manual for testing parameters.
This sensor is happy between 1-1.5v at idle. Below .27v triggers code p0117. Above 4.7v triggers p0118.
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P0117 - Engine Coolant Temperature Circuit Low
P0118 - Engine Coolant Temperature Circuit High
Note:
Any attempt to repair automotive parts and/or systems carries risk of personal injury. Always adhere and follow safe practices when working on vehicles. Such as, safety glasses, jack stands, no loose clothing, etc. No guarantee or warranty is implied. Use the information in this video at your own risk. Carsntoys is a member of the Amazon Influencer Program.
Publication, reproduction or distribution of this film is strictly prohibited.
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#p0117 #p0118

Опубликовано:

7 сен 2024

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Комментарии : 188

@electromejia3889 2 года назад

This is one of the best explanations I have seen in a mechanic video!!! Thanks man!!

@Malachishouse 6 лет назад

I just got one if those testers only bc I night something at harbor freight and out of all of the free things that was the most expensive. So, I chose the most expensive since I thought I don't really need any if them but it would cost me less to purchase any of the other if I did happen to need them. Now I know what I can use it for and it's perfect. Thank you so much for this video. My van is 1993 and has over 150,000 miles. Not quite ready to get rid of it but has a hard time starting. Now I know this could be the problem, if not, at least I can test it to find out. Thank you

@CarsNToys 6 лет назад

That's awesome! Glad to help.

@timinbovey 5 лет назад

My theory on parts like this is -- once you've gone to the trouble to remove it, just put in a new one. Generally an engine coolant sensor costs under ten bucks. If you've already read the codes you can be 95% sure yours is bad. Not worth the trouble to test, and even if it tests good, why not put in a new one for a few bucks and know you're set for another 100,000 miles?

@tinyscott1114 4 года назад

Great imfo. Thank u

@monogramadikt5971 3 года назад

they are $90 for my 2008 outback in australia :(

@dmaster225 3 года назад

I agree, especially if the part is already old, since its due to fail anyways.

@paulkomn946 3 года назад

@@monogramadikt5971 ok ,the prices in Australia are skyrocketing but the salaries are also too high.

@jonathanyates5198 3 года назад

Could have bad pig tail. Parts can come defective

@djc3949 5 лет назад

Dude thanks , great video and very very well explained. I couldn't find no one with a easy step by step tutorial. Thumbs up 👍

@CarsNToys 5 лет назад

Thank you. Glad to help.

@sammyemason1690 Год назад

Thank you so much for going slow and show exactly where part is.

@rattyboi9768 Год назад

Very nice vid, a sparkplug socket also works well. With some engines its easier to get those skinny extender bars for ur ratchet thru the small gaps

@ShoshonSun 3 года назад

Great video, keep doing them!! Concise, precise, clear, great camera work- awesome!

@smerk429 9 месяцев назад

Thanks im a subscriber. Question please : I changed my coolant temp sensor on my 95 lexus ls 400 but i didnt know i was supposed to disconnect the negative battery post. Why do we need to disconnect it ? Did i mess something up ? What can i potentially damage/cause by not disconnecting the negative battery terminal when i replaced my coolant temp sensor ? Thank you Anybody knowledgeable please reply soon.

@patrickwitt1323 21 день назад

Best explanation I have seen thus far. Thank you!!!

@loveofchrist5808 Год назад

Thank you sir very very great information I’ve been looking for a video that just makes it simple but there’s a lot of RU-vidrs out there that talk too much and get to the .20 to 30 minutes later user got to the point didn’t waste my time and that’s what I appreciate about your video thank you so very much God bless you and your family and friends. ✝️✝️✝️

@rjlinnovations1516 2 месяца назад

Thank you for sharing your very informative video tutorials 🙏. I have question? My Jeep Wrangler 2012 is not idling and I didn’t put my car key in the start mode. I unplug the female socket for the radiator fan motor bower and I have 12.38 volts reading?

@SafwanHashmi 3 года назад

Really awesome video and the best part is HOW TO CHECK THE SENSOR. Thanks a lot for sharing such video. I had an engine steam wash and after that this code is coming up. Most Probably it will be the wiring Right?

@-MrRichBiker1967 4 года назад

you are one smart mechanic, brother,god blessed you!!!!!!! love all your vids, they help out,so much!! ty

@CarsNToys 4 года назад

I appreciate that!

@d1user 3 года назад

Jahbless

@jpen541999 Год назад

Great job, great video.... my dealership said I have a bad ambient air temperature sensor. 2018 outback 3.6r. I call b.s on the dealership.

@senousyoucef989 5 лет назад

Hello,is it possible to reprogram the fan's starting temp(ex: from 95°c to 91°c?

@mechtechtechnician7040 5 лет назад

Very useful video.I'm MECHANICAL.now understand good or bad sensor

@regallac 3 года назад

Thank You very much for this detailed video!!!!! I had my water pump replaced at an AC repair shop and got this code🤬🤬🤬🤬

@olayinkaolatunde3028 2 года назад

Nice video, forgot to add if your sensor is good, then the second option is for one to change the thermostat to fix that code. Obviously you can do reconnect the sensor after confirming it’s good and test just to see if maybe there was a gap earlier or moisture affecting it which you’d have cleaned up but if the code pops back up then you change the thermostat. Nice Video!

@MrMoneyBlowin Год назад

So if change the sensor and thermostat there’s a high chance that it will be fixed? Currently have this error code problem

@rapidfirest 4 года назад

Thank you very good information, I will check the coolant sensor on my 09 Forester, I got a PO172 code, the reading temperature just go crazy, from 195° to 218, then drops to 204.8, then to 215, etc...

@orionxingu1758 Месяц назад

Good useful info and well explained. Thanks.

@AimGobalWorldBibleSchool 7 месяцев назад

Thanks man...Good Job!

@bobbyhogge2055 Год назад

Can you please tell me we're the temperature coolant sensor is on a f150 5,4L 3v triton 2006

@JerZeyFiveOh 6 лет назад

Fantastic video, thank you!

@paulkomn946 3 года назад

thanks for the very useful video. Today i changed the temperature sensor for my opel corsa and the check engine light turned off. Only with 10 euros.

@Boerikoe 5 лет назад

Very good, comprehensive & informative video - thank you !

@CarsNToys 5 лет назад

Glad to help. Appreciate the feedback.

@Dreccomel193 6 лет назад

Thank you for taking time to make this video...

@CarsNToys 6 лет назад

Glad to help.

@barringtoncarlisle2056 3 года назад

Well worth tracking down this video, I've let so many people know about it, especially those who own Chrysler 300s Thank you.

@losmoore3358 6 месяцев назад

I did that test, but 2015 nissan versa SL still over heats with same code. Could it be the thermostat?

@Aaron-hd8ql 2 года назад

Brilliant video thanks for being straight forward and honest.

@kenyoung5682 6 лет назад

An Excellent video. Would you consider making videos about more automotive sensors (for example, camshaft position , crankshaft position, and throttle position sensors). I don't want to sound greedy; but, it was an excellent explanation/demonstration. Thanks, again.

@CarsNToys 6 лет назад

Thank you. We have a number of trouble code videos and will continue to do so. Here's a playlist of what we have thus far: ru-vid.com/group/PLl6xt4Pyay3Au6ofOmORTPmC-mOE88Pyv

@flyfisherman3649 2 года назад

Didn't have any codes but thought since I bled the antifreeze (due to overheating) I should replace this piece. It was a bear putting it back in my 2004 Montana.

@jamesmichael8549 Год назад

My car had a Code showing up of P0115 Engine Coolant Temperature Sensor 1 Circuit ,and My temperature gauge is going high . Now I just now replaced my Sensor and a new Thermostat but still it kinda smokes and drain the resevior coolant . What's wrong with these car I need ideas to fixed my cars issues .good advice would be great . Now what is the settings of the Multimeter to test your sensor I have a Ever Start Digital Multimeter .

@iamasmurf1122 Год назад

On Australian Barra motors it is not in a such obvious place not even following the pipes will do it ; it is attached to the back of the cylinder head

@carlosberrios1021 Год назад

My 95 corolla is having problems starting very bad f/a mixture but once the car starts was no issues at all.....when I park the car for a few hours 4 to 5 hours car won't start right away it will take a lot of tries I replace the cts and still having the same problem...I don't know what to do.

@isrealperez9069 4 года назад

My 04 BMW showing ohm 2.1 is that good or bad my coolant temp goes from 98 or 99 until it drops to 94 or on highway goes down 88 and goes up can a thermostat cause this great video

@SpyC8779 Год назад

You mentioned you could have trouble starting your car. My truck has a weird issue where it only starts when it's hot outside and won't start in the morning when it's a little fresher. Could that be the issue ?

@johnquillman785 2 года назад

Thanks--a difficult location to get to. Think I can do it !

@erno9248 Год назад

Thanks for the teaching.

@jestep9 Месяц назад

This is a great video

@jazminecollins3552 3 года назад

Say for instance I have a commercial electric meter a digital meter which setting would I put it on if it doesn't specify

@franknitty299 Год назад

Thanks bro, this video definitely helped me

@luismt2394 2 года назад

My ram 1500 had this trouble code pop up (p0117) at first it was the lighting bolt and check engine light, then the coolant meter on the dash stopped working , would changing the sensor help?

@bross6899 3 года назад

What is po116? Toyota corolla says its the sensor as well but double checking. Id appreciate feedback thank you.

@Thatsn95girl 2 года назад

I've replace this sensor twice and the pigtail connector. Still my 98 v6 mustang throws the p0117 and the opposite p0118 if I unplug it. I don't know what to do

@colinrmerry Год назад

Great video - very helpful. Thanks for creating!

@mejesse809 4 года назад

Thnx for the video, thumbs up, do u know if this would be the cause of a rough idle and hard shift, in cold weather for my 2007 Scion TC, 139k miles, no dash lights and it runs fine in the summer?

@GreyMatter53 3 года назад

Dude thank you thank you. I forgot to plug mine back in (I'm 18 leave me alone 😂) and when he said a bad start up I knew I had to find it. Thank you thank you

@martinmathews9351 4 года назад

I have a 2008 nissan maxima and I get 5 voltage from the sensor wires and if I un hook the harness fans kicks on as should and they kick on as shoul but for some reason I'm getting a p0118 high input circuit and my temp gauge dont move help

@mikevescio8585 4 месяца назад

I have a couple of questions. Is there a torque setting on how much to tighten the new one? And should I use sealant or thread tape on the threads?

@konstantin-big 25 дней назад

You can use an aluminum washer

@adamsala9291 5 лет назад

Can this cause cooling fan to come on every 2 mins that's problem I have plz help cheers..

@TitoBolondru 5 лет назад

Yes

@gavtommo2964 5 лет назад

Mk5 golf gti, and my fan also comes on EVERY min or 2 even when engine is totally cold ( just started up ) did the sensor fix work for you ?? Many thanks

@INAWE73 6 лет назад

Great video. To the point and and you learn a little something about ohms and temp.👌

@CarsNToys 6 лет назад

Thank you. Glad to help.

@ShyLeonheart 3 года назад

I had an oil cooler leak in my radiator. Would that oil contamination have any affect on the sensor itself? My car is throwing a "low circuit" code. Would that be a strictly electrical problem?

@neverstoplearning382 6 лет назад

Again another great video. Thanks a lot.

@CarsNToys 6 лет назад

Thank you. Appreciate it.

@DanRobards Год назад

King! Great tutorial!

@alexandersilvar 2 года назад

Hi thanks for all your videos. I have a problem with my 2009 Honda Odyssey. The radiator fan will not turn on and I have incredible fuel consumption. I already followed this video to verify that both ECTS are ok, I checked all the relays and the fuses are ok,. I checked the ECTS connectors and they are fine. The fans are fine because I made a direct connection with a clip on both the fan relays, it's the only way they turn on. I used a scanner in auto zone and it shows these codes P2185 (Engine Coolant Temperature Sensor 2 Circuit High), P0118 (Engine Coolant Temperature Circuit High), and P0117 (Engine Coolant Temperature Circuit Low). I don't understand why show that, if both ECTs are fine. I don't know what else to check. Any suggestions will be appreciated, thanks.

@hosrow Год назад

Awesome video, great demo. How can I check the wiring if the sensor checks out?

@berwickbaptist1828 Год назад

This is great, thank you!

@TOMMYOLA1 5 лет назад

Good video...easy to comprehend and apply

@MartinGarcia-wy5kh 2 года назад

Does this sensor activate cooling fan ?

@Bey11ktb 3 месяца назад

Great video

@reginaldgilkes2213 Год назад

Where would I be located at on a 96 Ford ranger 2.3 l engine

@roiskieblogs1278 4 года назад

Good explanation

@Zeck88522 3 года назад

I have code P0118, I replaced 2 sensors, code doesn’t go away. Is it wiring issue next?

@darwinescobar7629 5 лет назад

Hello, my 2012 nissan rogue cooling fan won't come on unles ac is turn on. Currently temperature gauge goes up to 1/2 way and it doesn't seem to overheat, but I am concern about it. I repaired a leak on oil cooler unit,don't know if that has anything to do with it. Please give an answer. Thank you And fuses seem ok

@nickotasla3091 Год назад

GREAT WORK BRO.👍 Simple. Well explained. SUBSCRIBED..👍👍👍

@stanislav9608 2 месяца назад

I want not to check, but just replace 16 yrs. old Temperature sensor. Do you know if I have to apply any sealant to the sensor's thread.

@konstantin-big 25 дней назад

You can use an aluminum washer

@fstarockaburns425 6 лет назад

are one wire sensors the same? one prong on the thread part and one on the sender connector? Also - are most senders for passenger cars in the same ohm reading? Tested one today that was already warm and it showed 700ohms at about 25 degrees celsius.. the needle is all the way to the right when connected, which indicates its grounded. DIs the 700 ohms reading too high and causing the effect?

@sgt.mikebaran7105 3 года назад

Note From Experience...After You Replace Sensor And Even The Comnector...Even If You Read 5V ...It Things Are Goofy After...Clean The Pins On The Computer..TRUST ME.

@fishmanporgy Год назад

Thanks very easy to do.

@kennethWRX 8 месяцев назад

WHAT ABOUT THE OTHER SENSOR BEHIND THE MOTOR, HOW DO YOU DO THAT ONE HELP

@shonamagouyrk9575 6 лет назад

I know this is a dumb question, but my daughters read 0118,,,I already bought the sensor,,is it necessary to test it if I already got one?? OMG I'm hoping it isn't a wire,,my daughters had such bad luck with cars,,she's so young and has two children,,it's tough

@JamesBond-is5du Год назад

Thank you

@RicardoMartinez-ce2ic 3 года назад

Thanks a lot for all this help ! Saving us tons of $$$$

@uyiedoimioya5421 2 года назад

Is this d same sensor that controls the temperate guage

@gamers_mind8944 2 года назад

Does the plastic at the top of the sensor rotates?

@omertamerhoussein2100 4 года назад

Can anyone help please.I got BMW x3,2008,when the engine cold and you turn the keys , the TEMPERATURE INDICATOR GOES TO FULL RED..Yes ,i removed the plug from the sensor , STILL same.2 days now ,i broke my head.No crack cables.. PLEASE HELP

@eeyyaakk6801 4 года назад

could some other coolant temperature sensors have more than two leads? for example I think my mass airflow sensor has 4 leads. How do you measure it then?

@michaelblack3429 4 года назад

very good video helped me thank you

@dennisfengcanada 3 года назад

Simply great video.

@andyvroo88 2 года назад

Great video! Thank you

@sandramartez6472 17 дней назад

i wish i knew step by step how to take it off and how to install it

@martinmainiac9351 6 лет назад

Great video.. I just bought a 97 maxims gel with 102 5

@jamesark9926 4 года назад

Excuse me sir...how many sensors inside the hood...aside from underneath sensors..?

@barakaTV12345 6 лет назад

I have semi truck freightliner Columbia 06 and the fanclatch is running all time can you help me please

@tspark1071 5 лет назад

Great job. Helpful

@mustang19ms 4 года назад

Thank you man

@abomoss4455 5 лет назад

I checked and i just take the cable out and put it back again and it's works with my doge grund carvan 08 but still show me the check engine light on?

@nusretcinsoy434 2 года назад

Need thermal paste before installation ?

@otis52 5 лет назад

Great video brother thanks a bunch for the information

@isrealperez9069 4 года назад

Can it also cause by coolant being old or rusted

@mykea11 2 года назад

Very informative

@NibiruPrime2012 5 лет назад

Thanks for posting this informative video!

@ronaldwolke6006 3 года назад

Great explanation 👌

@sayfousaechao140 5 лет назад

It's a really great videos thanks for your help and keep up the good work thanks.

@CarsNToys 5 лет назад

Glad to help!

@calistacervantes7296 4 года назад

can you tell me where is the cooling censor for 1996 subaru legacy 2.2?

@lov4128 2 года назад

I replaced the sensor, and the thermostat (was nothing wrong with old one) and the engine light is still on, says error P0117 - which wont turn off. The Mechanic couldnt find any problems... no radiator leak, no problem with water pump, radiator fan ok.. He thinks its the computer? 2007 Town and Country. Maybe there's something wrong with the new sensor? With engine light on - safety / computer feature shut off my breaks?? They were working fine before the engine light came on.

@bigmac8299 6 лет назад

Would this work for like a oil temp sensor or accessible transmission temp sensor?

@zahermud2571 2 года назад

Perfect 💐. explain.

@okcarl9621 5 лет назад

i need help finding this on my 01 E39 🤦🏾‍♂️🤦🏾‍♂️

@rebel.mma.youtube 4 года назад

Woukd this cause the idle to be higher on cold starts if not working properly? My Subaru idles at 1.5rpm then drops when warm. I got a noisy exhaust so wanna drop this of i can. X3 things I'm going to check. Vacuum leak, idle control valve n this? Am i thinking right? I'm self taught so like to check I'm not barking up the wrong tree