freddyuk

Oh yes!

I have an ECL on an the scan shows up 4997 - glow plug module P064C 00 Do I buy a new module or do some other checks first. If I put in the part number on the scan SW: 04L 906 026 KD this is the NOX sensor??? I had that replaced recently. I am confused by this number?? Cheers

Here is the conclusion........you could not make it up!! The new mechatronic unit was delivered to main dealer on Friday so the car was due to be fixed today - Monday. Had a call this morning asking if we could bring over the spare key as they could not code the gearbox due to some corruption of the coding system. They need both keys at the workshop. The only time someone has been into the hardcore coding was when the towbar was fitted and we lost the Lane Assist and Cruise control. We are 1.5 hours away so made haste over to Cork. The other problem is that the wifes key was dropped down the toilet (do not ask - I didn't) just the other day. I removed the battery, it was wet inside so left in the hotpress (airing cupboard) for 2 days. I assumed it was toast but we could not test it as we had no car. We took the key up anyway and explained it may not work. Turns out my key which was in the car was corrupted and this was the reason they could not code the gearbox. This was handed back to us in an envelope and they insisted we did not put it anywhere near the car. The wife's drowned key was absolutely fine. It was two hours waiting for them to code in the gearbox. They asked if I wanted the wipers replaced as these were worn but it would be FOC. Blimey! They also offerd a free wash but it was absolutely belting down so I politely refused the offer - just give me the car back. I had asked for the trailer coding to be fixed but this was not done so still no Cruise control etc. Door locks still don't work. I wonder what effect my key has had on the systems as all I have ever done is change the batteries. A new key / coded is €400.. So the car is back and seems to work. We have a 2 year warranty on the gearbox. Also the NOX sensor was replaced. Total bill €3,800. France here we come.

Right on queue a week before our holiday to France the gearbox has now failed. I was waiting for it to happen going by all the reports herein. 73,000 miles and thats it. A lurch and big warning "gearbox fault no reverse gear" and into limp mode. Pulled over and let it cool off. I had my VCDS in the car with a laptop (essential kit nowdays) and no codes showing. Started up but limited revs so left it a while and made desperate phone calls. Tried again and I had reverse gear so gently drove off and found I had all gears. I had 10 minutes to my destination so got there ok. Going back home it went again and was revving up in first then changing up to third etc. No way I was getting home. I stopped did another scan and got the code 10668. P1736 00. Skoda main dealer was not far away and weighing up the odds I realised my choices were limited as local repairers cannot code a new box. I called Skoda and they said can I drive it there and they would scan it. I did that and guess what they concluded it need a new mechatronics unit. No way they were going to mend it. I invisaged a bill of say €2000 and decided to swallow it as we needed the car next week. Estimate came in at €3300!!! They also diagnosed my NOX sensor fault (see other posts) and could replace that for another 900.00. No parts on the shelf it was special order and they wanted €1500 up front to order the part from the UK. It may arrive Friday (today is Tuesday) or more likely Monday and I could get the car back Tuesday evening and we needed to pack up and leave Wednesday morning. I left the car there and got picked up by a friend and had a stiff drink when I got home. The kicker is the replacement unit will be the same as the old one and will fail in the future. The water pump which fails around 50,000 miles has been redesigned so an admission of faulty parts designed to fail but no redress for all the expense of replacing that. At what point do you give up and sell the car. Anything you buy nowadays is going to cost you unless you are very lucky. My only redress is that had I had the car serviced by the main dealer over the years that cost would have exceeded the new gearbox which still would have failed..... Beware if you have a 2018 Superb. Interestingly the main dealer had zero customers but lots of guys in white shirts and suit trousers with nothing to do so no wonder the costs are so high. A sign of economic doom and lack of interest in all the EV's in the showroom.

Stop start is an irritaion too far. Pull up for a few seconds at a junction and then realise the engine is off. So annoying and cannot be god for the engine/battery/starter etc. etc. Add to that the bloody EML has come back on after months of warning free driving.

Thanks for that. No not really used it but will do so.

I had the timing belt replaced by my local independant out in the sticks West Cork, Ireland with mileage 70,000 on the clock. The bill was 500 euro. 200 euro for the kit and 200 for the labour (4 hours) plus tax etc. Skoda parts used. No water pump as that was replaced not long ago. This has been redesigned I understand after so many failures of the original. Recall from Skode?? Of course not. I could not get the timing kit for much less than that price buying aftermarket..... While I was chatting I asked about replacing the DSG fluid as recommended by Skoda. I was told due to our location and driving conditions it was recommended but not as urgent as driving around town. Sitting in traffic with drive engaged was bad for the box and caused the earlier failure. We should be putting in neutral if sitting stationary (and auto start was not used as I assume this would put it in neutral automatically??). There are quite a few Skodas around here so he has experience of the brand. So that is an unbiased view of whether to spend the money or not. The timing belt was in good nick but the peace of mind is worth it.

I am going to change the timing belt at 70,000 miles. 2018 Diesel 2.0 estate. Any pointers on the best kit supplier please. I will not chenge the water pump as that was done already. Any other bits to replace while its in bits?

50000 miles is about when the water pump siezes up. The shroud stops moving and thus no temperature control.

I am hoping to ask another owner with DFGA engine if they are prepared to run diagnostic test on their car that has no NOX fault to compare with my results. It is a block of 12 items in the VCDS menu (suggested to me by another VAG owner) and requires running the car up from cold on a 20 minute run. IDE00021 Engine RPM IDE00075 Vehicle speed IDE00347 Air mass: actual value: IDE04090 Exhaust temperature bank 1 IDE04098 NOx-sensor IDE05357 Current temperature with NOx Reduction CAT IDE09007 NOx sensor before SCR catalytic converter: supply voltage IDE09009 NOx sensor after SCR catalytic converter: supply voltage IDE09010-ENG188621 NOx sens. dwnstrm. of SCR cat.: target heat. temp reached-Bits 0-7 IDE09016-ENG188621 NOx sensor upstrm. SCR cat.: target heat. temp. reached-Bits 0-7 IDE09018 NOx sensor before SCR cat conv: NOx emiss IDE09021 NOx sensor after SCR cat conv: NOx emiss I am not aware where these "factory" data results may be available but taking readings from another car on the road would provide a good baseline. This may be useful to others with similar issues and to provide feedback on aftermarket sensors. If this has been done before please advise.

I have read about this but we are not all capable of fiddling around inside the ECM. I am learning but not ready for that yet.

An update on this issue for anyone with similat NOX issues. I have had great help from one poster on the Rosstech forum who schooled me on using the inner workings of the VCDS. I will replicate my readings here which I took today. We think the new sensor IS working after all . I am getting readings on both NOX sensors. moving log 19th.csv

Here are two reports - first the latest after replacing NOX sensor and the second is the original before replacement. I also have the measuring block readings available in CSV format - quite large amount of info.... 1 Fault Found: 9571 - NOx Sensor 2 Bank 1 P22A1 00 [11101100] - Signal too Large MIL ON - Intermittent - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 7 Mileage: 110763 km Date: 2024.12.20 Time: 12:57:26 Engine RPM: 1254.00 /min Normed load value: 0.0 % Vehicle speed: 29 km/h Coolant temperature: 76 °C Intake air temperature: 53 °C Ambient air pressure: 1010 mbar Voltage terminal 30: 14.720 V Unlearning counter according OBD: 40 NOx sens.dwnstrm.SCR cat conv: NOx conc.: 2459 ppm NOx sensor before SCR cat conv: NOx concentration: 12 ppm NOx sens. dwnstrm. of SCR cat.: target heat. temp reached-Bits 0-7: 1 NOx sensor after SCR catalytic converter: supply voltage: 14560 mV NOx sensor before SCR catalytic converter: supply voltage: 14400 mV Outside temperature sensor 1: B1: raw value: 11.5 °C Mean injection quantity: 0.00 mg/stroke 1 Fault Found: 9560 - NOx Sensor 2 Bank 1 Voltage Suppy P220B 00 [11101101] - Electrical Malfunction MIL ON - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 6 Mileage: 108999 km Date: 2024.10.19 Time: 13:42:17 Engine RPM: 1501.50 /min Normed load value: 68.2 % Vehicle speed: 60 km/h Coolant temperature: 83 °C Intake air temperature: 65 °C Ambient air pressure: 1000 mbar Voltage terminal 30: 14.760 V Unlearning counter according OBD: 40 NOx sens.dwnstrm.SCR cat conv: NOx conc.: -10 ppm NOx sensor before SCR cat conv: NOx concentration: 74 ppm NOx sens. dwnstrm. of SCR cat.: target heat. temp reached-Bits 0-7: 0 NOx sensor after SCR catalytic converter: supply voltage: 37600 mV NOx sensor before SCR catalytic converter: supply voltage: 14560 mV Outside temperature sensor 1: B1: raw value: 14.5 °C Mean injection quantity: 14.69 mg/stroke

It was the one giving a negative reading.

Well one option is to fork out £500 for a main dealer supplied sensor and hope it is different to the one I bought. If it does not solve the problem the cost starts to escalate. I am wondering why there is so little feedback from others who must have had the same issue and may have used aftermarket parts.

Sadly after posting this the EML came back on!! So back to square one we go.......

It was Autodoc. We have trouble getting parts in Ireland at reasonable cost. I also got my waterpump from them delivered to France after I paid the main dealer there €100's more as I was desperate. In a few thousand miles I will be replacing that again so it is here handy! Yes it was the after SCR unit. No coding required.

To close out this thread the sensor seems to have cured the problem so far. The replacement sensor was from a well known German discount parts supplier (in Ireland) and cost euro 160 delivered.

Thanks. Sensor replaced. All fault codes clear. Will see if it comes back. I did not pay £500!

Do you know what the reading perameters should be? Not sure where I would find this info. That way I can check if the sensor is working but some other issue causing the fault.

Voltage info above so not sure if these are within spec. Very odd I had Adblu issue and then this comes up although they seem to have this issue a lot. I am told it will go into limp mode at some point. I am considering removing and cleaning the sensors although not sure if mine are both in engine bay or underneath. TMBKH7NP1K7013639

The numbers are from the VCDS. The NCT (MOT) measures "smoke" so they stick the sensor up the exhaust pipe. A bit more info off the VCDS Voltage after SCR 40800 mV Voltage before SCR 14400mV

I am still getting the NOX sensor fault and am worried it may go into limp mode. I am happy to buy an aftermarket sensor if it is this at fault but the car just went through its MOT and passed with no problems. The NOX readings are Downstream SCR -10ppm Before SCR 106ppm I am no expert on this but this seems to suggest it is working in removing NOX from the system. As I have posted previously the Adblue system can mess up NOX readings and I have had a problem with Adblu where a cable was left disconnected which is now fixed. I wonder if this was a cause? The fault keeps coming back so I need to fix it. If I need the sensor what is the part number I need to buy?

I don't know if this applies to VAG cars but I just saw a report that Range Rovers are getting a lot of these NOX sensor faults showing up as I did on my Superb. The cause seems to be running the Adblue too low which then throws up the code for NOX sensor. As I know to my cost we had a NOX fault code which then disappeared after some considerable miles. The quoted cost to replace was euro 500 so it did not get replaced at that time. We did let the Adblue run low some time ago before this and then had a related problem (see another post) so I am thinking we had the same cause and effect. It just takes a long time to throw up a code and a long time to reset itself after Adblue is topped up. Anyone recognise these faults?? It has also been noted that Adblue is a way to save the planet yet there are millions of plastic spouted canisters being left in landfill!!

Just an update on this - I have splashed out on a proper Rosstech HEX-V2 interface. I have an NCT coming up and the Airbag light must be extinguished amongst many other things!