Geoff1959

Hi Ords, No sludge around oil filler cap. Judging from comments it seems the way to go is to get a compresion test done by a specialist and take it from there. If as several people suggest it is the oil cooler that would seem to be a much more viable thing to fix? Really appreciate all your comments.

Update: Checked oil dipstick and there is no emulsified oil and what is on the dipstick does not look thin. Can you do a compression test on a diesel? would that give a clue if it is head gasket? Is there a way to diagnose if it is the oil cooler? There has been a previous loss of coolant which the garage put down to a pin hole in a hose. Now i'm wondering if this is the real cause. I'm thinking the next step is to get it to a garage for further checks. Seems like it might be woth spending the money? Thank you all for the advice much appreciated.

Good morning all, Looking for help to make a decision. Checked water in header tank yesterday and found thick sludge in the header tank. I believe this is indicative of a blown head gasket. Vehicle is a 2013 Mk3 Octavia with a 2.0 Tdi engine. Its done 190k It has just passed mot and has 11months to go. Is it viable to repair this and what is the likely cost going to be? (realise you cant give me precise figure Ball park would be good.) One other option would be to find an engine on e-bay (£900- £1,500) is that worth considering? There doesnt seem to be much in the way of S/H octavia's on the market at the moment. Unless you guys know differently. Thanks in advance and off to look at market place now.

Sorry for late reply. So bought a 5 wire O2 sensor from a well know aution site. The pinouts seem identical to those on the existing unit. However it wont fit due to a plastic lug in the top left of the plug. (The skoda original plug does not have this). Is it safe to remove this with a pair of snips? The unit was advertised as suitable for a 2013 MK3 Skoda octavia. Obiously i dont want to cause damage to the new sensor or the ECU.

Hi Cap44, As previously reported $0748 o2 sensor positive current control circuit open Bank1 Sensor1 I have finally got round to trying to get this sorted. I have purchased the special socket with the slot cut down the side. I also have a replacement o2 sensor so ready to have a go. Just one problem wwhere is Bank1 sensor1 located? If anyone has a photo of this it would really help. Thanks in advance.

Thanks for the info, sounds very iffy glad it worked out OK for you. I have a solution to this issue. Gen company coming out to me with new key. Programming on site. £230+ vat which TBH is about what I was expecting. Thanks to all those who replied.

Hi thanks for reply. There are a number of keys etc available online does anyone have the software to code them to the ecu? Is that a viable option?

Can anyone supply me with a key and program it for use on my skoda Octavia mk3. 2013. It's a 2 button variety.

Hi Guy's and Gal's, I have a bank1 sensor1 open circuit. That is what the code reader is telling me. I guess the is a possability that there could be a wiring issue. How can i check that? There are many o2 lambda sensors at all sorts of prices from £35 to £175 can anyone tell me which one (part number if poss) that i need to buy? Is it easy to get at and within the capabilities of your average diy'er? I understand that there is a special socket with a slit which i can buy or hire. Thanks in advance.