Touran AVQ Engine: No Power? Troubleshooting

Hello everyone.
I'm having a problem with a friend's 74kW/AVQ Touran.
The Touran suddenly lost power since the weekend.
After reading and deleting the errors from the past few years, the following error remains:

Control unit part number: 03G 906 016 BT HW: 028 101 073 1
Component and/or version: R4 1.9L EDC G000SG 7210.
Encoding: 0000072
Operating number: WSC 68331 126 01118
VCID: 76E8693901DC1C3
16683 - Charge pressure control.
P0299 - 000 - Control limit exceeded.
Environmental conditions:
Speed: 2856 RPM
Torque: 208.0 Nm
Speed: 61.0 km/h
Last: 73.7%
Voltage: 14.29 V
Binary value: 00001000
Pressure: 2029.8 mbar.
Pressure: 1275.0 mbar

The vehicle has 217,000 kilometers on the odometer, and it comes with VCDS.

Does anyone have a tip on how to best track down the source of the error?

Regards,
Dirk.

Suddenly, to me, it always sounds like a torn or detached charge air hose.
or, alternatively, due to a general leak in the LL system.
Best regards,

Hello,

"I've roughly checked the hoses before, and vacuum does reach the VTG sensor, but some hoses disappear quickly into the engine compartment, so it could also be a leak somewhere."
At first glance, at least, I didn't notice anything like that.

Regards,
Dirk.

HI,

This issue has sparked an idea for me.

- look for a steep mountain - a really steep one.
- Parking brake engaged.
- attempt to approach

Specifically, the 1.9-liter engines with their small turbochargers should be able to generate good boost pressure. *)
And that's IN THE STAND .
A second person, standing next to (or even in front of) the vehicle, can then listen for where the hissing sound is coming from.

My ex-1Z was driven with a completely detached intercooler hose... it only left two nasty black marks on the asphalt .

m;

*) I'll check that with the BLS later - a mountain is present .

Quote:

The vacuum also reaches the VTG sensor, but some hoses quickly disappear into the "void," so it could also be a leak.

Are hissing sounds audible during acceleration?

"Is the VTG (Variable Turbine Geometry) functioning correctly, and does it extend fully even when the engine is idling?"

Are there any signs of martens?

Autoservice wrote:

Quote: The vacuum also reaches the VTG sensor, but some hoses quickly disappear into the "void," so it could also be a leak. Are hissing sounds audible during acceleration? "Is the VTG (Variable Turbine Geometry) functioning correctly, and does it extend fully even when the engine is idling?" Are there any signs of martens?

"Hissing noises are not audible (neither during acceleration while driving, nor at idle with the head inside the engine compartment)."

I haven't checked the VTG yet. I think what I'm seeing in the upper left corner at the back of the engine is the VTG unit (but I'm not 100% sure). When I disconnect the vacuum hose, there is vacuum pressure there when accelerating while the engine is idling.
At the VTG pole, which I probably can only feel and not see, I haven't done anything yet... You don't want to break anything...
Can I move it (or, to put it another way, should I be able to move it) with the engine turned off?

There are no signs of martens.

Here's some additional information. The vehicle is quite "dirty" and hasn't been to a workshop for at least 5 years (except for oil changes).
The release bearing is completely worn out (making noises when idling), the auxiliary heater pump is making noises, and there's a humming/beeping sound coming from somewhere in the rear left area, between the engine and the firewall (even with the engine off).

However, all of this has been happening for the last 5,000 km (except maybe the beeping), and the Touran still had power then. That's why I didn't mention it specifically at first.

The car had only two female previous owners until the specified mileage, and as long as it was "somewhat operational," it never saw a repair shop.

Unfortunately, it doesn't really work anymore.

Regards,
Dirk.

Look at this: https://community.dieselschrauber.org/en/viewtopic.php?t=24758

and here: https://community.dieselschrauber.org/en/viewtopic.php?t=24759

https://community.dieselschrauber.org/en/viewtopic.php?t=2992

The VTG (Variable Turbine Geometry) must already be fully engaged even at idle.

Okay, I'd like to briefly summarize what came out of this "case."

The VTG adjustment was stuck/defective. The control rod couldn't be moved at all... Something must have broken inside the turbo.

My colleague, however, didn't want to invest in any major repairs and ultimately sold the Touran.

Regards,
Dirk.

Thank you for the feedback!

Quote:

My colleague, however, didn't want to invest in any major repairs anymore, and ultimately sold the Touran.

The possible cause ranges from a small stone in the vacuum chamber to bent guide vanes... if that was the only problem, then it's relatively manageable.