SKODA FABIA Water Temperature Sensor + testing (MK1 99-07)

In this video I show you how I removed an old water temperature sensor and fitted a new one on a Skoda Fabia MK1 (99-07) PD 1.9TDI ATD engine, which is similar to other VW/Audi/Seat/Skoda models
Coolant Water Temperature Sensor 06A919501A
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The content of this video is for information and entertainment value only and it's creator makes no claims, promise or guarantees of it's accuracy, coverage, instruction or adequacy of the procedures contained therein.
HatBoyHarvey assumes no liability for property damage or injury incurred as a result of any of the information contained in this video.
HatBoyHarvey recommends correct safety practices when working on motor vehicles, vehicle lifting tools, axle stands, hand tools, electrical equipment, chemical, products and consumable parts, lubricants or any other tools, equipment, chemical product and consumable parts, lubricants seen or implied in this video.
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[@ilkaymehmet6118]

I have replaced the temperature sensor & its thermostat housing several times over the years and have now become adept at doing it, however, your video/s are always great tutorials for a recap - thanks HatBoyHarvey for another superb 'how to' video...

[@HatBoyHarvey]

As you saw in the video with the sealing ring, even I get it wrong sometimes. I decided to show how easily you can overlook things even with such a simple item to replace ;-)

[@adiadrian3894]

Thanks. I've had the same problem, solved it this September. Mine is a 1.4TDI AMF engine.

[@polskiopeladmirala5596]

Thank you, sensor replaced. Good tip with airbox 👍👊

[@24579william]

Great video, Now I know what to do. ( I've just been turning my engine on and off when I get down the to clear it hahaha

[@paulandrews3785]

Great video thanks bro cheers 🥂

[@HatBoyHarvey]

No problem 👍

[@sven-t]

nice video again!

[@HatBoyHarvey]

Thanks again!

[@EdderzX1]

Interesting on the testing. I have an old one in mine and I cleaned the bronze part at the end thinking that would fix issues, as I had some white smoke which was definitely over fueling not coolant loss. Now my mpg seems all over the place I’m just going to replace for a new one. Would have been interesting to see if cleaning your old one would have fixed the issue or the issues are internal. Thanks

[@FrenesiOrquesta]

Exelente video

[@bitgam1223]

thanks for the movie, best regards from Poland

[@HatBoyHarvey]

zapraszamy :-) (If that is correct?)

[@bitgam1223]

@@HatBoyHarvey this is correct. thanks

[@adinko7]

Thanks man I hope it will solv my dashlite collant problem.

[@HatBoyHarvey]

You're welcome, hope it works for you :-)

[@adinko7]

@@HatBoyHarvey thanks you inspired me to repair my Fabia

[@launchtube5653]

Perfect 👌

[@HatBoyHarvey]

Thanks 😄

[@josipcoric964]

Thanks mate

[@HatBoyHarvey]

Happy to help :-)

[@lunchhead7085]

You got a friday afternoon special there hat, so far not had any issues with my 05 Skoda Fab @ 144k

[@HatBoyHarvey]

It depends what you mean by that as my fabia is also in good shape!? ;-)

[@tadeuszwojcik4748]

super 👌

[@jankoplik477]

Dobré video. Musím systém pak nějak odvzdušnit? Muj problém stále přetrvává. Vyměnil jsem termostat i čidlo jako vy. Diagnostika pořád píše čidlo teploty chladící kapaliny. Kde může být ještě chyba? Díky.

[@ronyuen8327]

@6:07 you made that look so easy.... It really wasn't as easy as you make it look. Seasoned pro

[@HatBoyHarvey]

Glad I could help :-)

[@sergeyenigma5841]

Красавчик! Привет из Харькова!)

[@HatBoyHarvey]

Твой город прекрасен

[@jamiebestminiatures]

Hi again. I used your videos to remove my console and replace heater matrix so thank you. I have a coolant leak that I just can't diagnose. The garage did pressure test and said no visible leaks, Is there a radiator cap that could be faulty, somewhere they may have connected the pressure test? Sorry I'm not that clued up to cars. Replaced the expansion tank andcambelt/water pump. Garage said could be gasket however no signs from oil/smoke/oil cap. I had run some steel series gasket repair through the system as well that I guess may not have worked. Any help appreciated. Mk1 fabia vrs pd130.

[@HatBoyHarvey]

Radiators can leak slowly and the coolant evaporates out of sight. Heat can open cracks up and close when cold. It maybe worth testing if it leaks stood cold for a while. Obviously a cracked head or block would be pretty bad, so something to watch out for, as you are doing. Fresh oil may show something up more clearly if there is an issue. Might just be a wait and see.

[@DanJLaw]

Hey Harvey, I've got some questions about a skoda fabia vrs, it seems like the removal of the back bumper is in two parts, I just wondered if you could point me in the right direction on how to remove and replace etc, I don't think it's quite the same as the standard fabia

[@HatBoyHarvey]

Sorry, not sure. I think they have a couple more screws. I thought they were one piece, maybe you have a bottom skirt. I know there is a diffuser on the MK2 fabia.

[@simonsena1378]

Thanks Harvey for that great video, very instructive and clear: I was wondering if I could test the operation of the cooling fan by shorting the terminals to the water temperature sensor or is it likely to damage the temperature dial because the resistance is too low?.

[@HatBoyHarvey]

it goes to the control module so no you can't short it. Take it off and the pcm will detect a fault and turn the fans on. you will probably need to clear the fault afterwards. you can also check the thermostat is not open all the time and not getting fully hot. To see if it works, power the fan manually . check the fan relay and connections.

[@simonsena1378]

@@HatBoyHarvey Thanks Harvey its great to know, I have tested the Fan direct from the battery and the fan is fine. As you say it could be the thermostat, the needle takes its time to reach the mid way mark and then drops if I go downhill. The thing is when the AC is connected only the small fan spins and I thought they were connected in parallel. thanks again great channel.

[@Sztyepadzso]

Great video, as usual! I have found it, as my Fabia 1.2 AWY from 2003 was not able to pass the emission test(high CO). I went to the garage with very hot motor(temperature indicator was vertical) , and the guy was doing the high RPM test(I don't remember, was the idle already done or not), and after a several unsuccessful test run, the car was starting to beep, and the red thermometer symbol was there. He was not able to test it after. It means I have two problems right now: -1st one is the high emission-value, it seems to be rich. I can read around 0,75-0,85 V from the O2S2 sensor, which is high, but fairly constant. -The second one are the fans at the cooling radiator. I have tried as well, the catalytic converter was red already, and the cooling fluid was in the sky, but they were not running. (Temp indicator was around the bottom of the red sector.). Isn't is possible, that these two thing are related, and the temperature sensor somehow not sending signals to the ECU (only to the Instrument Panel) that the fluid is already warm, therefore it is thinking, that the engine is cold, and the relays will not switch the fans ON, and the engine is getting the richer fuel mixture thank to the auto choke. However, the higher RPM at the cold start(around 950-1000) last only for 1-2 minutes in idle.

[@HatBoyHarvey]

Thanks. Sorry to hear you are having problems with the car. What did the garage say about the car? The fans can be fixed, check fuses, possibly relay is toast or fans themselves can also fail (voltage tests). Check fuses, OBD2 scan for diagnostics and replace coolant thermostat and temp sensor. Is there water in the oil after changing? Filters changed? Dash lights? 0.85v is rich should fluctuate between 0.1 - 0.9v. test/clean/replace MAP sensor. one thing at once, process of elimination :-)

[@Sztyepadzso]

@@HatBoyHarvey Thanks for the reply! I was the last customer in the garage before the closed, therefore we had not to much time to talk about it, but his main issue was of course not the CO emission(as the can run), but the boiling water, and why the vents are not running. He was mentioned the thermostat, but as the garage is mainly only checking cars (and let them into the traffic-I don't know the English name of it) , he was redirected me to my mechanic(aka me). My wife had problem with that before, in 03/2020, just before the COVID-borderlocks, while she was sitting for an hour in the car in the jam. So I know it was there at that that time already. -I can easily rotate the vents by hand, I was not able to check the electronic yet. Was already darkness, when I tried it yesterday. -OBD scan brings no error, - "febi bilstein 29318 Coolant Temperature Sensor with Gasket and Spring" on its way, I am ordering the coolant thermostat right now. Do you have any suggeston for the coolant thermostat(just as you have the link in the video description) -there is no water in the oil, and no oil in the coolant. -Filters are changed in every year, just as the oil. Btw, there is no oil, or coolant loss at all. -No lights, no error. -The 1st sensor(O2S1) is fluctuating, just as you wrote, but the second one (O2S1) is between 0,75-0,85, as far as I know, it should have a nearly constant value, if the cat. conv. is at its working temperature. But not this high, as you wrote as well. -MAP sensor is on the list Thanks for your tipps!

[@Sztyepadzso]

@@HatBoyHarvey I have tested the fan last week, I have directly connected it to the battery(using the starting cable). The fan was not woring, so I have ordered a new one from SKodaparts. I tried the new beforehead, while the old was already dismantled - old fan is broken. I installed the new one, and tried the car. After warming up, I stopped by the roadside, and kept the motor running on higher RPM. The vent was starting to turn at 94°C, so the switch in the cooler is OK. As it CAN switch, it means, that the termostat is working as well. While I was dealing with the fan, I have ordered a few other sensors, and switched them:the coolant temp sensor(like in this video, thanks again!), and the MAF(or MAP?) as well. This second one got a cleaning previously(using that special spray just as you), but the resistance value was not right(accoring to the grap I have found on the workshop-manuals.com/skoda/fabia-mk1... I have ordered a new switch to the cooler , and a thermostat and a pump as well- If I have to replace any of this, I replace them all. After the fan test, I drove to the ARBÖ garage for a quick emisiion test(not officially, but to know, is it okay I have done). It seems that the emission values are okay, and I will be able to get the permission. Thanks again!

[@HatBoyHarvey]

@@Sztyepadzso thanks, that made an interesting read, cheered me up to think of the effort and care you have put in to look after your fabi and all things covered, great, just also check for vacuum leaks, egr clean etc and your done. One thing you can now be sure what has been replaced to eliminate those parts if any near future faults occurs :-)

[@bravozuluful]

Hi, can you make a video where you take out and do the maintenance to the steering pump of the Fabia pls

[@HatBoyHarvey]

Thank you, I will look into a video about this. What is the issue you are having?

[@mihaicretu8127]

Please tell me where is the spark plug relay on the Skoda. Please! Please!

[@THEWOWGODOFGEAR]

Hello i have a skoda fabia 1.4 68 ps mk 1 2003. I have an issue. My temperature warning flashes at random points. No coolanat leaks or overheating occurs. Also when flashing ambient temperature sensor goes mad or fuel gauge goes to empty level but i have at least 1/2 of the tank. Any ideas what might be? Maybe i should change the sensor or could it be the ecu? Thanks

[@HatBoyHarvey]

it could be the level sensor in the expansion tank (common issue) and the fuel sender unit has worn out in the tank OR also sounds like either water or condensation on the connection contacts at the back of the speedo binnacle or the circuit board has some broken solder joints that need re-flowing. Try disconnecting the binnacle, take it out and then spray electrical contact spray on the connections (take neg earth lead off first) let it dry fully and re-connect- if no joy inspect the circuit board. Let us know how you get on :-)

[@roman9112]

Nice video,thanks for it!Is this same work on Fabia RS pd 96kw??

[@HatBoyHarvey]

I believe so

[@martincox8250]

Hi Harvey. Great Vid as always. Just changed my ECT sensor. Would you know if this is link to the fuel management system? (ie would a faulty sensor effect fuel economy?) Thanks.

[@HatBoyHarvey]

Yes and it would. The ECU takes temperature into account to decide the fuel-air mixture ratio and a bad sensor could result in an over rich ratio leading to black smoke from the exhaust and poor fuel economy.

[@martincox8250]

@@HatBoyHarvey brilliant. Thanks for the info Harvey. I'm hoping this might cure my fuel economy issue. Appreciated.

[@inkmask6167]

I have a Fabia 1.2 Htp and have replaced the expansion tank and temperature sensor but still have a coolant light on dimly constantly despite levels being fine any help please?

[@HatBoyHarvey]

Examine the connection/wires for breaks on both and then look at the cooling fan relay and connections.

[@meckleemu]

Hello, many thanks for your helpful video...I'm having the same issue. Would you know where the sensor is located on the 1.4 MPI model (2001) at all? I can't seem to see it in the same place as this particular model. Many thanks again for the great invaluable content!

[@HatBoyHarvey]

If you follow the coolant pipes you will see that they go into a plastic fitting on the side of the engine.

[@meckleemu]

@@HatBoyHarvey thank you! Would it be the same Two Pin sensor as shown here? Thanks again :)

[@HatBoyHarvey]

@@meckleemu 4 pin

[@meckleemu]

@@HatBoyHarvey thank you!

[@joe187976]

Iv a 1.4 2005 skoda fabia would it be the same. Thank you for your videos.

[@HatBoyHarvey]

On the 1.4 MPI take off the engine cover and it is just behind the rocker cover on the right pointing up vertically.

[@joe187976]

@@HatBoyHarvey you're a legend. Thank you for the reply i ordered my oil temperature sensor and water temperature sensor. Love my little 1.4 tdi work horse skoda fabulous. Have a great weekend.

[@rakeshhegde4638]

Hi.. I have an issue with skoda Fabia 1.2 petrol, that Airbag indicator is continuously ON from last 6 month and vehicle is handled by me only. Can you please share how to fix this problem..

[@HatBoyHarvey]

Can you remember any conditions 6 months ago that could be related? check the seat belt switch under the passenger seat isn't stuck in open position. is your battery correct Ah for car with good 12v+ voltage/charging ok? clock ring on steering wheel, many things can do this. Wiring on older cars can loosen within connections. Does the car leak-in water? Are all systems working correctly in car? Have you changed the brake-light pedal switch? if you can get access to obd2 reader it will help narrow things down a bit.

[@shantspeed]

I have problem in dashboard (EPC) and cruise control stops working. I have been to monitor he says should you replace brake light switch and I replaced and problem is still

[@HatBoyHarvey]

You will have to go through the various systems to find the fault. throttle pedal, throttle body, traction control and of course the cruise control. Are the switches on the cruise stalk stiff/loose? spray with electrical contact to clean with bat disconnected. First look for bad connections by taking off/on, leaks in throttle body/clean MAF/EGR. May have to use OBD2 scanner to indicate issue in the end. Also re-check brake pedal switch fitting/functioning correctly. Hope this helps and you can get it working again :-)

[@shantspeed]

@@HatBoyHarvey Thanks, I will try

[@122803ej]

good job as always. would u like to make a video for changing water tank of wind screen washer. please. or if u already did then would mind to send me the link , please. Fabia combi 2003 MPI

[@HatBoyHarvey]

Thanks, yes I have this video to do on my list and will do it, thanks

[@vikassharma-pq3ro]

Hi I couldn't find the video of yours changing other sensor. I changed this sensor but issue remains the same Regards

[@HatBoyHarvey]

Coolant level sensor within the overflow tank

[@sergeyenigma5841]

Дружище! Сделай пожалуйста видео как заменить бачок омывающей жидкости. Спасибо!

[@HatBoyHarvey]

да, я внесу это в свой список

[@MALUMEMALUME-mn9tg]

what if the cold start continues after replacing a temperature switch its start after 2 attempts or more vw polo 9N?

[@HatBoyHarvey]

I am not sure if it is down to pour quality replacement expansion tanks or something internal, maybe resistance builds up in the wires with age that gives incorrect readings to the ECU . There are 2 sensors one for temp and the other for level, the first is a variable sensor which you can test out of the car with a volt meter (resistance decreases with heat) and the coolant level switch sensor which is just a switch continuity across the terminals. Obviously you can override this, but I can't recommend it you understand.

[@MALUMEMALUME-mn9tg]

@@HatBoyHarvey thanks for reply sir the other sensor you are talking about is camsensor?

[@antuncvrtila8193]

hi I have the same problem, 1.9sdi, replaced the indicator, the thermostat on the engine and the radiator and one fan (small) BUT it still gives that error? what to do, .thanks for the information

[@HatBoyHarvey]

Is it actually overheating or not all (fans come on?) Check power, signal cables and ground, then use vagcom to diagnose where the fault is.

[@antuncvrtila8193]

@@HatBoyHarvey Normal temperature work does not go above 90 C

[@antuncvrtila8193]

all replaced and the coolant tank new

[@antuncvrtila8193]

problem in the board :(

[@travelpeacefulworld8329]

Inside my car brother same light blink do you think I have same problem

[@HatBoyHarvey]

This is one of the problems that can activate the light so it is good to change so you know to eliminate it if you still have a problem :-)

[@miransalih1079]

Hi, I've skoda fabia, last week water pump changed, since than I realised the air vent don't blow out a warm air, somthing isn't right, any idea of what causing the this problem? The water level ok.

[@HatBoyHarvey]

Sounds like water circulation has returned and you have warm air again. If this is not what is set on the temp knob then the flapper motor is stuck on hot which often happens on older fabias.

[@miransalih1079]

@@HatBoyHarveyHi thanks for replying, I'm sorry, I mean it don't blow a warm air, it's only cold air.

[@HatBoyHarvey]

You could have an air-lock stopping circulation through to the heater core or the control is stuck on cold.

[@ivantomljanovic4841]

Whata that mean highest resistance in wor so that sensor will be what?

[@HatBoyHarvey]

There may have been a varience in the water temp as the colder it is the higher the value. I'm not sure if this alone would be a sign the sensor is bad, but the control unit may not like it when the sensor is outside a pre-defined operating range. I don't know if this alone can trigger a warning light or not (possibly) What is important is the change in resistance from cold/hot which my old sensor seamed to struggle with and would indicate a fault. My new sensor hasn't thrown up a light yet, only time will tell.

[@ilmibajrnmovski3205]

I have poor heating in the cabin. It is a Fabia 1.2 44kv 64 hp 2007.lpg-petrol please help

[@HatBoyHarvey]

The main problem with the fabia is the heater often gets stuck on hot or cold because of a sticking distribution flapper motor, I plan to cover this as some stage, but not yet, I am sorry. The other things are to make sure the coolant system is clean and flushed inc heater matrix, the thermostat is working, all temp sensors are working. Hope this helps :-)

[@frankenstein.official1132]

how to remove old camshaft speed sensor a fitted new one ? please video :)

[@HatBoyHarvey]

position sensor?

[@frankenstein.official1132]

@@HatBoyHarvey maybe