Hello!

This is a Skoda Octavia 1.8 TSI 2015.
So, I had this error code pop up intermittently for a little while when starting the engine from cold. But now it's coming on everytime I start the engine from cold.
The error doesn't pop up when the engine is warmed up, and I'm not noticing anything on how the car drives, fuel economy and such. Maybe a little higher oil consumption.

I've been to the local VW/Skoda dealer, and they are saying the boost pressure regulator needs readjusting, and are unwilling to quote me a price on it.
 

I myself am not to sure about that. So I've been looking for other explanations for why the error message has been popping up.
So far the main reasons I've found are the wastegate actuator seizing/not going to correct position. Which seems like a more probable to me. And I've looked at this post on a 1.4TSI as somewhat of a guid one how to fix it. https://www.golfmk7.com/forums/index.php?threads/how-to-fix-the-turbo-wastegate-rattle-on-the-mk7-golf-1-4lt-tsi-140-150ps.340805/

So my questions are these, how easy should that actuator be able to move? Because mine is moving, but I feel like I'm having to use alot of force (probably a subjective view) for it to move. There's no rattle on it, and it feels secure in place.
Also, if I were to remove it, wash it, sand it and lube it up. Would it require a reprograming after reassembly?

Could the fix be as easy as cleaning with breakcleaner, paper, and high-temp grease on the acctuator spindle?

I should probably also note that I tried jerking the actuator back and forth from closed to open this morning before I started the car, and when I did, the error message didn't pop up, which kinda reaffirms my idea that it's the actuator that is stuck or seizing a little.

14 hours ago, Edis85 said:

I should probably also note that I tried jerking the actuator back and forth from closed to open this morning before I started the car, and when I did, the error message didn't pop up, which kinda reaffirms my idea that it's the actuator that is stuck or seizing a little.

Just for context it's not really a start stop error, it's the boost regulation cct, the effect is that start / stop is unavailable. Is yours the electronic waste gate actuator, servo style?

 

If you've got a proper diagnostics reader, there are voltages that can be read to reset up the actuator . You'd want to record what they are before disassembly. Also find the correct spec, hopefully there will be a difference and that is your cause.

 

Manually marking thread position not a bad idea either as a fall back.

4 hours ago, TheClient said:

Just for context it's not really a start stop error, it's the boost regulation cct, the effect is that start / stop is unavailable. Is yours the electronic waste gate actuator, servo style?

 

If you've got a proper diagnostics reader, there are voltages that can be read to reset up the actuator . You'd want to record what they are before disassembly. Also find the correct spec, hopefully there will be a difference and that is your cause.

 

Manually marking thread position not a bad idea either as a fall back.

 

Hi, thanks for the reply! I'm aware that the start stop error is a an extra thing that pops up and has no bearing on the fault itself. And yes, it has the electronic wastegate actuator. Which after spending the better part of the entire yesterday researching seems to be out of the voltage specifications. I'm not 100% sure which turbo is in the 1.8 TSI, but it's the CSJB engine.

Sadly I don't have a proper diagnostics reader. The one I have can't read out the voltages from the actuator. If I had that it would make doing the adjustments a pita. I don't even think I'd have to disasemble the turbo in order to do it, even if its thight fit back there.

 

Do you think I can just adjust the actuator rod manually without the voltages until the error message is gone, and without having to do a firsttime adaptation with vcds or obdeleven?

9 hours ago, Edis85 said:

 

Hi, thanks for the reply! I'm aware that the start stop error is a an extra thing that pops up and has no bearing on the fault itself. And yes, it has the electronic wastegate actuator. Which after spending the better part of the entire yesterday researching seems to be out of the voltage specifications. I'm not 100% sure which turbo is in the 1.8 TSI, but it's the CSJB engine.

Sadly I don't have a proper diagnostics reader. The one I have can't read out the voltages from the actuator. If I had that it would make doing the adjustments a pita. I don't even think I'd have to disasemble the turbo in order to do it, even if its thight fit back there.

 

Do you think I can just adjust the actuator rod manually without the voltages until the error message is gone, and without having to do a firsttime adaptation with vcds or obdeleven?

Think it will be a small IHI turbo, maybe IHI IS12.  It will be much easy with diagnostics like say Obd Eleven.  Doesn't cost huge amounts. Can stop the pro sub after 12 months and just use for code reads.... Subscribe when you need the additional functions like brake rewind or adaptions / basic settings.

 

Back to your question.  I would say it is possible, but you will be shooting in the dark.... Which way to turn and how will you know when it is right?......  Suggest you mark where you start so you can return to it if it  all goes bad.

 

Count the turns maybe do two or three rotations at a time. Try car again.  Go again for a second or third time in the same direction.

 

If no success. Reset position to where you started and go opposite direction.  Like I say you will be shooting in the dark though...  By the way I haven't adjusted an electronic wastegate actuator before - only seen in a few videos....

How much time do you think this would take for a VW/Skoda mechanic to do? I got a quote from the local VW/Skoda dealer - and they have set up 4,5 hours of work on it, which to me seems insane. I mean, are they charging me for the time it takes to cool down the engine after having me driving it there?

The electronic actuator on my 1.5 TSI started operating intermittently. Probable cause was carbon build up.  My mechanic is a very honest guy who will always try and find workarounds and fixes to save me money. Unfortunately he was unable to in this instance and the whole turbo had to be replaced. 
 

There are second hand actuators on eBay if you wanted to try that as there’s nothing to

lose for £35. 

Hello,

Did you find out what was wrong? And how did you fix it?

I have the same car with same issue.