How to Test and Replace an Engine Coolant Temperature Sensor P0115 / P0125
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- เผยแพร่เมื่อ 24 ส.ค. 2024
- In this video I go through the steps on determining why you may have code p0115 and/or p0125.. Ultimately, it comes down to two things, the harness connector or the coolant temperature sensor itself. A simple diagnosis that any one can perform at home. This was performed on a 1997 Nissan Maxima. Check with your vehicle's repair manual for testing parameters.
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P0115 - An excessively low or high voltage from the sensor is entered in to the ECM.
P0125 - Insufficient coolant temperature for closed loop fuel control.
Note:
This video is being performed by an experienced tech. 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, use 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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6 YEAR'S later and your video is still helping people out good video bro
YUP!
Just writing to say thanks. You helped me get my temperature gauge working again. This was on my 1990 Volvo 760 GLE with the B280F Peugeot V6. (I have been told that this engine was used in the Delorean). Following your diagnostic steps, on my sensor connector, one pin read 12V and the other 0. Then I switching to OHMS, the other pin read open circuit. So I reasoned that there must be an open in a ground connection somewhere. But instead of trying to fine it , I just ran a new wire from it to ground, measured the voltage again and it dropped from 12V to 5v . I started the car and the gauge now works.
Awesome! Glad to help.
I have a 2004 VW Beetle. A couple of days ago it starting acting strange. The engine wouldn't run right and the air conditioning wouldn't work. I suspected it was the coolant temperature sensor. This morning while the engine was cool I tested the resistance across the 2 ECM pins which should have read at the most 2.5 kilohms. It read 416 kilohms. I replace the sensor and now it runs like it's supposed to. I am so thankful.
Thanks for explaining this simply. The phrase "if your not sure" is perfect.
Because that's why we are all here.
Thanks for breaking things down simply.
I've never used a multi-year, but after this video,
I may go out and order one!
Thank you. Appreciate the feedback.
Thank you for explaining this simple circuit design so simply.
This is probably the best how to car guide on TH-cam my guy
Thank you very much! You shared a piece of gold information quickly in your video. You suggested doing a google image search for the location of something on your engine.
I was sifting through videos trying to find temperature sensor on 97 outback. Less than 5 minutes after watching part of your video and I'd found it on google images and located it on my motor.
Thanks again!
Glad to help!
CarsNToys hey bro
i have is 300 2003 and the tempreature gauge is not working which sensor should i change ?? if the gauge is working fine
please help
you can contact me through email at uselessboy28@hotmail.com
or you can just say it here if you know
Kyle Miller
Thank you very much! Your video is easily understandable and very rich in technical information. Awesome work, dude! Greetins from Brazil!
Great information, well done, and quickly delivered! A+ man, no boring intro shit to skip forward, no crazy music like other channels where i cant hear what they are saying. Well explained, please say you are a teacher or something cause its well executed. Thanks a bunch btw this helped me diagnose my issues with truck.
Thanks man, appreciate it. Not a teacher. Just try to keep things simple. Cheers
Cool, thanks for the info!
I've replaced the thermostat and water pump on my 1995 Nissan pickup, and still getting anomalous water temperature readings.
The thermostat in question is called a "fail-safe" thermostat meaning that when it fails, if fails in the open position. If you look at the top you will see where the carriage containing the pellet has locked itself in a notch on the body to keep it open.
You can use a hairdryer to heat it up too, saves the mess on with the water and pan. Great video thanks.
thanks I am a widow and can now change it myself without spending money I don't have .
I know what you're saying!
@John Smith maybe her husband took care of that stuff and she has kids and doesn't have money to take it to the mechanic and now is doing it herself
Thank you for this vid. I just changed my temp sensor using this vid. Everything from the multi meter was spot on
Carsntoys you are the best. Thank you for your time.You blessed me.Blessings to you.
Very good information here! I'm getting a P0125 on a 2001 Toyota Tacoma PreRunner and getting ready to drop $15-$30 on one of these that is likely bad, might not even be broken. Thx!
Thank you for the accurate information. I own the Infiniti shop manual and your information is much more informative. I think the manual is intended to meet minimum requirements so that people have to go to the dealer--just my impression and not based on facts but on logical deduction.
HI..french cannadian here and yesssss..your video is very helpfull...very clear information..i'm going to test it on my wife Tercel 1999 code 0125...thank you very much...Merci beaucoup..;)
Absolutely brilliant tutorial to watch. I, we appreciate mentors such as yourself.
Thank you, and all the best from New Rochelle N.Y.
Thank you. Appreciate the feedback.
Thanks... most detailed video I've ever seen. Voltage reads and such are so hard to find
Glad to help.
You state there can only be two possiblities. You could very easily have a break in your wiring at any point on the harness. Two wires twisted (short to power or ground) you could also have a dead circuit in the pcm itself. But 8/10 times, you are absolutely correct.
Also i mean no offense, this is a great video!
By far the most helpful video on TH-cam or anywhere. Sound, picture detail and simplicity of explanation 10/10/10. Saved me from doing a lot of work that still wouldn't have fixed my crank but no start problem on my 99 Suburban. Thanks so much.
+Tonya B Thanks, Tonya. Start with basics - if the vehicle cranks check for spark and fuel.
I just subscribed after watching this video. Very useful and insightful information. Thank you!
Awesome, thank you!
1:07 I wish connectors came off that easy in real life!
Nice job . Very concise and to the points. New subscriber and 👍
My car is throwing P0118, P2184, and P2185..I ran all the tests mentioned in your video and everything checked out, but these codes will just not go away. Any idea what else could be causing this? Great video by the way; easy to follow.
Thank ypu for sharing your knowledge on this issue. Very easy explained as to follow along and understand. Great information. Take care.
What a Great Video...Not rushed well explained well presented!!!!Please keep them coming!!!
Thank you.
Very Good info. even after 4 1/2 years. I changed my sensor and the temp guage moved a little, so I know something wrong. It is a new sensor But now I will do the tests that you suggested. Appreciate that.
Good stuff! Glad to help.
Thank you so much for this video. Will have to do this on my 307cc 2006 2litre the next days. I'm not a car expert, but I can do this with your guide. Thanks!
+Jan Sallads (LilaQ) Glad to help, Jan
Excellent video and explanations!
very good instruction...I'm getting 00.0 across the board. it doesn't matter which way I put the probes. There is probably more wrong with this vehicle than just a sensor, but training and learning never hurt anybody.
You are great. Thank you for showing this to us. The video is very clear.
Fanatic video and instruction. If the reading on the connector is not good, how do i correct it? Where does the wire go? How can I check and replace it?
You have the DMM set at the 200K ohms setting when you are measuring the sensor, so that means 2K ohms and not 2 ohms.
Exactly what I thought.
Jan Burgel but you guys still got the point.
The problem is not every multi meter has set ranges to select from. Some are auto ranging. So if you are looking for 2 ohms, and you see 2k, you might think the sensor is bad when in fact it's good.
Excellent video, very well illustrated and explained...Thanks 👍👌
Thank you very much for teaching us personally I appreciate it
very clever and understandable - thanks
The temperature switch is on the top of the engine and places the engine into closed loop once the engine heats up. The temperature sensor, for the dash gauge, is always on the cylinder head to measure the coolant temp flowing through the cylinder head.
What does ... open loop due to engine load or deceleration means?
99max owner i watch all you vidos very insightful on how to test units and also installs
thanks so much for your time and knowlege hlp me alot prepare for jobs wat size tools and run downs
Shayne34988 Onthenet Glad to help!
I checked sensor and continuity using your method and I have continuity and resistance on sensor but my gauge on dashboard shows max temp as soon as I put my car in ON position and the engine is cold as night. What could be the problem? Thermostat?
Good vid and sensibly presented! Many thanks.
Thanks for the video. Recently got a 1991 Fleetwood Tioga Arrow (Ford e-350 chasis) whose engine temp gauge is not working. I'd like to do this myself, but everything is SO compact and intertwined under the hood it is very intimidating. I think I found the sensor, it seems to be just behind, to the right of the distributor cap, but it is almost impossible to reach.
Excellent video. Thanks to you, I'm back on the road with a new sensor! 🤗
Great video so simple and clear
Hello and thank you for this informative video. I checked the sensor on my 2000 Camry 3.0 v-6. I remember you saying the normal ohm rage should be 1-2 ohms. The reading on my sensor is 5.9K ohms. I realize that zero continuity means a faulty part, but what about the really high resistance that I'm finding? Please advise.
catalyst2112 did you find out the answer to your question? Thank you
So thorough great visuals best TH-cam explanation period. Thanks
+Mike Mike Thank you!
Simple, great demo. Thanks.
Çok teşekkür ederiz video için. Aynı konuda yayınlanan diğer videolara göre daha açıklayıcı ve bilgilendirici. Sadece farklı araçlarda motor sıcaklık sensörünün sökülmesi, motor soğutma sıvısının eksilmesine neden olabilir. Bu nedenle sensör yeniden takılınca sıvı seviyesi kontrol edilmelidir.
Great information , very well explained easy to follow. Ive subscribed looking forward to more tips
Thank you. This is the best explanation of testing the engine coolant temp sensor.
Glad it helped
Hello CarsNToys
I want to say great video and I was able to locate my temperature sensor on my 2005 Jeep Grand Cherokee 3.7 for I am getting a ‘gauge not working’ on my gauge-digital dash and temperature gauge does not move. I had replaced the temp sensor and I still get the ‘gauge not working’ error and my temp gauge does not move ( I let the vehicle idle for 15 minutes).
I did the following test with my voltmeter:
1. Voltage to temperature connector as indicated in your video and I get 4.9 volts.
2. Tested the OHMS continuity on connector and it passes by giving audible sound.
3. I ran the Kilo-OHMS test on the old and new temp sensor and I get 5.0 on old sensor and 4.5 on the new temperature sensor.
4. I brought a new temp connector, which I had not replaced yet because the voltage test to the original connector works showing 4.9 volts.
5. My electric fan turns on when the engine is idling and when the a/c comes on.
Any ideas on how to test this ‘‘gauge not working’ on 2005 Jeep Grand Cherokee?
Thanks,
Before doing any of this, if you have a three prong connector. Get the car to normal operating temp and unplug the sensor. If the fan comes on, it is the sensor.
thank you
simple and clever explanation.to the point
!!
You must download a temperature versus resistance chart. That is crucial. My multi-meter was showing 22,000 ohms. Then I looked at the chart I googled and downloaded. It showed that for 80 degrees temperature I would have 22,000 ohms. My multi-meter does measure temperature. The temp reading on the sensor was 80 degrees. I touched the lead right onto the metal part of the sensor. I looked at the chart and noticed that 22,000 ohms was just right for 80 degrees temperature. A reading anywhere from 1,000 ohms to 58,000 ohms (!) is normal reading depending on the temperature of the metallic part of the sensor. .
Thank you for that information I don't haft to down load it now saved me data and time !! 🙂👍👍👍
such an informative video damn im glad i found this mine i believe is not working on my 2000 honda accord ex and thanks for explaining that ohm meter tester i have one i brought a while ago so yeah thanks for all this
Thank you. Glad to help.
Great video zoom in work too!
Bless you
Great Tutorial, explained everything clearly in regard to fault finding a temp sensor ,Thank You.
Thank you. I appreciate the feedback.
Great no-nonsense informative video. Thank you.
+Draiakaiden Glad to help.
Very good explanation ...only one rectification ..the resistance of the sensor it is 2000 ohms (2 K ohm) as the scale used in 200 K ohm I guess.. but any way your video is very good.
Great trick with the hot water! Thanks for the video
Glad to help!
Thank you sir,
Excellent information and well presented.Very clear instruction Well done. I have big hopes that replacing my ECT(Which failed the ohms test) will cure my problems.
If not then its a new MAF!
+malcolm grey Glad to help! Cheers
Thank you for sharing, very useful content, and you made it very easy to apply for novice like me☺👍.
Glad to help.
Thanks for the great informative video. I am replacing Temperature Sensor in Corolla 2009 just for preventative maintenance. The new sensor is coming with coper gasket. Could you advise if any sealant (like Permatex anti seize) should be applied to the Sensor's thread. I will appreciate your advice.
You shared a lot of informations in one video, that's fantastic! Thank you very much👍
Glad to help out. I appreciate the feedback.
You make this test so easy,!!!! thanks for your video,
just some added info that the temp sensor shown is what triggers the code--however that sensor is not what tells the temp of the engine on the dash. That sensor is a one wire sensor someplace else.
On two 25+ year old vehicles, the tab on the female connector broke off. Once when I was at the junk yard -- snapped off as soon as I gave it a good push, and once by someone else who replaced this sensor before I go the vehicle I'm troubleshooting (rough idle, engine stalling when engine is cold, problem goes away when engine is at op. temp. In short, I'm missing the press tab. Do I order another one and splice it in? Thanks for the video -- I'm following it now.
NICE Bro... but could you show us where if the sensor is not the problem, a fix on the cause?
Thank you very much from India 🌹🌹🌹
the best testing video on TH-cam keep em coming tnx
+Luis Martel Thank you. Will do.
+legioner9 it should just read as a negative voltage instead of a positive. Hope this helps, and good luck
+legioner9 no problem
.
Look - it's on sale right now:
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I hope this will help you
th-cam.com/video/bPAIFL8VH9w/w-d-xo.html
Good video! I now have a better understanding of multi- meters too
Hvala za ovako poucan video.
This video helped me fix my problem. I owe you a case of beer.
Glad to help out.
very helpful thank you very much, I can do this tomorrow, great job
+Wilson Boyd Awesome! Cheers
Very well explained
GOD Bless u Sir
Your explain is very clear, thanks
my coolant temp sensor reads 7.0 olms cold. Meter set on 2k or 200 in olms Is it good or bad
Thank you much! Very comprehensive and easy to understand video without any silly thrill or shocking high volume introduction music! Well done mate. Thank you so much for you sharing information much appreciated.
Glad to help!
Great video. I learned and I'm going to test it myself.
I actually got the code P0125
Great informative video. Very well photographed and explained. Have an 02 Honda Odyssey and the temp gauge shot up to hot and yet coolant is fine. Ironically just cleaned ports and replaced egr valve. Hope my problem is this simple. Within a day after I had the transmission temp sensor go bad. Within a week of that this happens. Again I hope its as simple as the sensor. Do you know if I can continue driving for a little before fixing without causing damage? Thanks for the great video and explanation including water test.
Thank you. I wouldn't drive the vehicle if it's close to over heating. How's the water pump?
Reservoir level seems fine, no steam and timing chain as well as water pump changed replaced at 108,000 and now has 147,000. Any other concerns?
Are the radiator fans turning on..th-cam.com/video/bf2kvZJx1OA/w-d-xo.html
Appreciate the info, thanks dude!
Does anyone know if it could be thermometer instead?
I just want to say how well you presented this. I am not mechanically experienced but certainly have no trouble following your clear and concise instructions. I do have a P0115 error code... Mechanic could not work it out but I put my cheap Chinese ODBII diagnostic tool onto the car and it clearly told me the fault is a P0115. Now I know exactly what to do to test further.
One question if I may? I have a Peugeot 407 V6 3.0L and the reason why I found out I had a problem was the water guage would shoot up to maximum temp then drop to stone cold... then shoot up again. So to me that makes sense that the coolant temp sensor or the harness is where the fault lies... BUT if it is not there... do you have any suggestions?
Thank you!
+John Carter Glad to help, John. If all turns out well with the coolant sensor, I'd check the cooling fan motor next. You can simply test them: th-cam.com/video/bf2kvZJx1OA/w-d-xo.html
Thanks for the video. When the car is cold (65 degrees F outside), I only get 950. When the car is warm (90 degrees C on the dash), I only get 65. These numbers seem was below yours. Is the sensor bad? Thanks.
Just fantastic. Thank you so much! Super helpful.
How to chek the sensor having 4 pins.
im So thankful you made this video.
Glad to help! Thank you.
Very helpful info. Thanks.
very explanatory and helpful. thanks.
Glad to help
What's the role of the harness continuity wire ?!
It didn't react to the sonor test on the multimeter nor does respond to the lamp test !
Please help.
can this sensor cause a hard start? I had this on my check engine but took off the battery & it hasn't appeared since. my car is having trouble starting when its cold but after warming up the car starts instantly without any struggle
Ever get a solution?
Wondering does this make the temperature gauge stay at level c as in cold blowing cold air still the temperature takes for ever to register & blow hot air.
Replacing this sensor,would it solve my upper hose from busting?
If we want to check ground on the sensor..do we have to set key switch to on?
Good explaination
Also, whenever the engine will not take throttle and stalls as soon as I touch the gas I have to hold the pedal to the floor to get it to restarted. When it is running right I can just turn the key to start it without touching the gas. ECT sensor test OK, 5v from ECM to connector and 2 ohm resistance that drops as coolant temp goes up. This problem can happen when it is hot or cold weather and hot or cold engine temp. 94 GMC Yukon 5.7 can run great for days and then bam, just will not take any throttle.
good video, well oriented! thanks for sharing
+richard urieric Glad to help
very informative video thank you so much
Hi I got less than 1 volt from the terminal 2 (the positive which is coming from the ECM which should be 5V, )what to do next?
How to figure out where the cut is?
cool video. you help me fix my running fan on my odyssey. thanks
Awesome! Happy to help.