Hello. 

I've had this code pop up the other day on my 120k 1.9tdie A3.  2008

I turned the car off as was in limp and it was went.  I was giving it a bit of a shoeing to be fair.  Wondered if anything needs a clean out or obvious things to check on it ?

Thanks

 

3 hours ago, A3car19tdi said:

Hello. 

I've had this code pop up the other day on my 120k 1.9tdie A3.  2008

I turned the car off as was in limp and it was went.  I was giving it a bit of a shoeing to be fair.  Wondered if anything needs a clean out or obvious things to check on it ?

Thanks

 

Hi check the boost pressure sensor but its most likely the turbo vanes are sticking.

Steve.

Is the turbo easy to remove without  stripping half the engine on the A3 1.9tdie. ? 2009

Is it easy enough to open it up and clean it if necessary without damaging it ? ?  And put it back on?  Never touched a turbo before, stripped a few non TC  engine though. . 

 

Is there any cleaner worth wile spraying in to it if it's possible ?

Edited January 20, 20251 yr by A3car19tdi

Ideally you need to get the car scanned with VCDS. There might be other codes logged that can help pinpoint what’s going on.

My experience of turbos, 2012 A4 Allroad with under 70k miles went into limp mode. Ordinarily I would have stripped it down myself, but pointless cleaning, given labour to get to it. The exhaust manifold nuts can be a sod without induction heater. In addition the oil feed pipe to it needs to be replaced as the union nut rarely goes back on properly, and this is usually down the back of the engine. Bypass this and you risk an oil leak. There’s also an actuator on there. This is normally set up with the turbo on the bench. It can be tested with a vacuum.

Any cleaners likely to be short lived. When I stripped the turbo down on mine it had carbon build up. Also one of the vanes on the turbine was bent. Normal to do oil and filter change as a matter of course when fitting.

Check out Turbo-diesel.co.uk. They will have Garrett turbos, BorgWarner, new in a box, or you could opt for refurbished. Main dealer will use exactly the same part but boxed Audi and daft price. You’ll also need exhaust gasket kit.

 

Where abouts is the boost pressure sensor location on the 09 tdie ? I might swap that out before pulling off the turbo . 

On 1/20/2025 at 7:00 PM, Stevey Y said:

Hi check the boost pressure sensor but its most likely the turbo vanes are sticking.

Steve.

Where's it Steve ? 

6 hours ago, A3car19tdi said:

Where's it Steve ? 

Hi on top of the turbo exhaust side.

Going back to this then,  if I was traveling along a flat motorway at a  steady  60 for a while , would that causing the vanes an issue and make the light come on?  It happened the other night. 

Would they have been going wrong?