Hi all, 

 

I've recently sold my 14 plate 1.6 Yeti and purchased a 63 plate 2.0 Octavia 4x4 with 71k on the clock. 

 

Three weeks into ownership and I've had my first issue, a flashing glow plug light followed by engine light. 😅

 

I have a cheap OBD reader that links to phone app. From that I obtained DTC P0544 which relates to EGT sensor. 

 

Also, when I look at the live sensor data it shows EGT back 1 sensor 1 as 1000degC whilst the other two show more realistic temps. Basically it looks like the sensor has shorted out. The car is driving fine but the issue is that the PDF won't regen without proper temperature data from the sensor. 

 

After a bit of process of elimination,  I'm pretty sure it's the one down the back of the engine. A right bugger to get at! I've ordered a 17mm crows foot to help removal. If that doesn't do it the mechanic can have it! 🙂

 

Just thought I'd post this A) to see if anyone has had the same experience  and because after a lot of googling I can't find any Octy mk3 specific threads on it. Plenty of other VAG threads about though! 

This thing is a right pain to get at!! 

 

Had a quick play with the crows foot I received this morning but not going to be that simple! One of those jobs you need three hands in a space you can only fit one! 

 

Anyone else had this access issue and if so how did you get around it?

 

Had a look in the service manual but it doesn't mention anything about disassembly of surrounding parts. 

 

 

 

3 weekes into ownership, Id take the car back to where you purchased it from and let them fix it under warranty.

Bought privately at a good price and no reason to assume this is anything other than bad luck. So I'll use some of that 2+ grand I saved over a dealer purchase to make amends! 

So after fighting with this at lunchtime, I gave up and applied a bit of WD40 and left it for a few hours. Returned to it this evening and the thing was only finger tight, came straight out! 😎

Now off to the motorfactors in the morning to find a replacement. 

 

I almost caved this morning and called the mechanic, glad I didn't now. 

 

How did this turn out? Did the replacement fix the issue? I have the same code too - is the code specific to this sensor? I've just had a p2080 code pop up too (FFS)

A bit of a bump on this thread as I've had almost the same experience, except mine was a P0545 error.

 

After downloading the workshop manual and reading this post I eventually located the EGT sensor 1, out of sight down between the bulkhead and engine and have to agree at least 3 hands are needed and there's only space for one.

Crows foot spanners seemed a little to thick to my mind so I got a 17mm window socket to do the job.

 

As everything is by feel the question next was how to get the socket onto the nut, keep it there and then due to the limited space fit the wrench.

 

Then I realised that the EGT sensor comes with a handy cable which you can slide the socket down onto the securing nut and with a bit of insulation tape round the head of the socket it wont fall off and end up bouncing off of the undertray and settle out of reach on a suspension mounting.

 

So after refitting the tray and dropping the car back on its wheels that's the approach I took.

 

Removal was fairly simple after I cracked the nut it was a combination of fingers and hand turning with the socket.

In the words of The Haynes book of lies 'refitting is the reverse sequence to removal'.  Except now the socket wrench wont fit at all (even though it did before) and the 1/4" extension suddenly is too long because I want to turn it the other way.

Eventually I nipped it up tight but if its the 45nm stated in the manual is another matter.