kareems

Waiting for your findings with the (L) to compare with mine Checked it and it’s fine, not blew so I am not sure at this moment how the fans should act but over the past few days I drove it for over 400KM inside busy city roads and on highways and didn’t notice any heating problem

Wondering, What did pete tell you? Is it supposed to be a K or an L? I swapped my K today for an L and the error disappeared! I doubted that my K control might be faulty so I got another K control, tried it and the error appeared once again but once I swap it for the L control the error disappears and never pops up again. But now I am confused since previously (on K control): 1) the fans would kick in on low Speed after the engine running for some time 2) the fans would kick in on high speed after engine running for some extra time (probably engine got hotter?) 3) the fans would kick in on high speed instantly when I turn the AC on Now (on L control): 1) the fans would kick in on high speed once the engine coolant fluid temp pass 80° according to VCDS and they stop as the heat drops 2) the fans wouldn’t turn on instantly when the AC is turned on but rather turn on/off at high speed in a pulsing manner although the AC is functioning completely normal regarding cooling the saloon and the AC pipes feel cold to touch 3) didn’t manage to notice the fans running at low speed After swapping the control module I left the car stationary running for 20-30 minutes monitoring the temp but no increase more than 90° and I went for a 10-15 minute drive at busy city streets with no increase either. But as mentioned, now I am confused about the way the fans are supposed to function originally.

It’s a 1.6 AVU and no climatronic control just A/C

I am suspecting the fans too, but to my surprise Pete confirmed my suspicions and turns out I have a wrong fan control relay (K which should be L)! I will start by swapping the relay to an L and see what VCDS says about it. I really hope the error isn’t at the fans as I have no interest in changing them, they seem to work completely fine to me with no temperature problems Will update you tomorrow with my findings if I managed to do the swap.

Couldn’t wait much longer, had the wiring checked yesterday This is the connector pete was referring to: I checked the wiring from the ECU to this green connector I am holding in my hand using an avometer and both of the yellow and yellow/red wire gave a reading on the avometer I also checked the wiring from the other end of the green connector to the fan control relay and both wires gave a reading also That was a huge disappointment to me to be honest. Currently I am intending on trying another set of fans and another fan control relay But I am wondering what does the last letter on the fan relay refer for? Mine has a K on it and I read somewhere that octys with wire throttle (like mine) use a relay with an L on it while the K relays correspond to octys with cable throttle but I can’t seem to find any info on the differences between different relays if there is any and I can’t make sure if the previous car owner had it swapped

So I suppose overlaying that diagram with the one from the golf video it should look something like this: that's a bummer! Did you find the green connector at the place mentioned? Will try to check mine ASAP and update you with my findings

will make sure to update the thread here if I checked mine earlier but I did some searching as you suggested and I guess you are referring to this: in our case, according to Pete we should find a green connector with 10 positions for wires

for testing the fan speeds: I turned on the ignition and waited until the car temp increased then noticed the fans turning on at a low speed for high speed I kept the ignition on and alternated between waiting/pressing the gas pedal until I noticed that the fans' speed increased so I suppose that means high speed is working right? totally right, I tested the fans like this when I was making sure that the problem wasn't in the fans If you are planning to check the connector asap I would appreciate if you added some visual guidance with photos/videos it would help a lot and thanks for mentioning that it's under the wipers motor I tried hardwiring the fans too when the fans didn't work properly back then and definitely noisy, sounds like you are driving a tractor and my AC works fine so I am not sure what I am missing here but definitely giving Pete's instruction a go since that's the only wiring I didn't check when I was investigating the fans problem earlier

Okay the description clears it a bit, now I understood that the connector is something different from the ECU plug I referred to earlier with bright colored wires, will search for that and report back! would it be possible that the fans work at full speed although I am having this error? since, if I am not wrong, I remember that I tested the fans out and they were working at both high and low speed normally as far as I understand and I would definitely appreciate any additional info/images.

1.6L octy here too and last I checked my fans were running both speeds high and low, but now you are making me a bit hesitant and I will have to double check if it works on low speed and I never had an overheating problem either but I think that's worth mentioning, running low speed only was actually the problem I mentioned having a couple of months ago and I went to some local workshop to have the wiring inspected and the problem was fixed (supposedly?) First of all, As makymak mentioned I have the same impression about your help being super accurate according to a previous thread I had here asking for help so Thanks a million Pete!! Second, I am new to the whole DIY car fixing thing and English isn't my main language so I struggle with some terms so please correct me if I didn't get you 100% right. What I understood is that I should remove the scuttle panel (which is the black panel under the windshield wipers shown in the photo, right? had to google that lol) under the scuttle panel I will find the ECU with it's connectors connected and wires wrapped in some black tape/tubing, are these the wirings I should inspect for damage? I am not really sure what the "scuttle connector" is to be honest, but my best guess is that it's the one held in this photo (since it looks green to me): the next step, after I identify the scuttle connector, is to inspect both wires, the yellow one and the yellow/red one, from the back of the connector for any visible damage and examine them electrically through pin 6 & 7 in the connector it self Is that right? and what's the array for the pins in the connector? pin 1 is the one on top left side and I go on horizontally from there for 6&7? and also by testing them electrically you mean by a 12V test light right?

Hey as the title mentions, I am getting this error in VCDS and I can't seem to find out what the problem is For added context: I had some trouble with the fans a few months ago, changed both fans (new large one and a used small one) and had the fan control module checked (the box thingy) and I have been told that It's working fine But the error is still there and I am not sure how to approach the problem nor was I able to find diagrams for the fans wiring or anything also is it a catastrophic fault code or can I just ignore it? since everything seems to work fine for me I would really appreciate it if anyone can guide/direct me on how to get rid of this fault code or which parts should I check

First of all, excuse me since I am not an expert in cars yet as I have been into fixing that Skoda for a couple of months only and I hear lots of bull**** from different people and it takes loads of effort to understand the right thing to do specially that I am not familiar with the car-related English terms Second, my issue isn't resolved nope, the timeline went as following; I had an issue with the AC and went for and electrician repair shop to check the car, I found out that the fans work only in high speed and had some engine/coolant thermostats + big fan replaced fixing the fans making them work in both high and low speeds. I decided to check the AC pipes if they needed to be filled with R134a since it wasn't cooling and the AC repair guy started checking and told me that the following parts are working fine; the pressure sensor, the compressor, and the engine went louder a bit when I pressed the AC button, but he said the fans should kick in and they didn't and thought that the fan relay needs to be replaced so I tried different relays but nothing changed which made me come here and ask to find out if I am misunderstanding or missing something Third, what you are trying to say here is that I need to vacuum my AC pipelines and add R134a first for the fans to kick in when I press the AC button and that it's completely normal for the fans not to work when the pipes aren't vacuumed and filled with liquid refrigerent, did I get that right? I am not sure I am familiar with the terms OFN and pressure-drop test what I am sure of is that the AC repair guy used this gauge to measure the pressure in the AC pipes and the arrow on the blue one was between 150-200PSI if I recall that right since there are mutliple measurments

One repair guy mentioned that but what's the logic behind it? that doesn't seem right to me, would be glad if you explained it to me from what I understand whether the pipework contains refrigerant (R134a) or normal air the most important part is that it's enough to trigger the pressure sensor to run the fans once the AC button is pushed and regarding the fans, as Breezy_Pete said: by LP fan I think he means Low Power fan? since the fans have 2 speeds? and yes I have 2 radiator fans with twin speeds wired in parallel as far as I know as they both turn on/off together I will make sure to check that fuse among the other fuses today, last time I checked all were fine but yesterday the radiator (30A) fuse above the battery went dead out of the blue so I will check both fuse boxes according to the attached diagrams to make sure they are working and have the right amps and report back but as far as I know the fuses weren't the problem

By working fluid you mean the R134a? That is true it currently doesn’t have R134a in the pipes but my issue is not that the AC doesn’t cool The issue is that the fans don’t start when I try to turn the AC on, aren’t they supposed to start whether the pipes have R134a or ordinary air? Since both would trigger the pressure sensor Last time I checked all the fuses were working but I would check them one more time today to make sure my engine code is 75kW AVU according to the sticker in the boot

I am not exactly sure since I checked the pressure at a repair center but if I recall right I think the gauge measured 150-200 PSI how much PSI should it be for the fans to operate?