Audi A6 2.5 TDI: Power Loss & Fuel Consumption

Please provide the text you would like me to translate from German to English. I will only provide the translation.

Hello,

If you ever use the search function, there are definitely helpful things to find !
MFK? Air mass measurements...?

It might sound strange, but I had the same problem for a long time. In my case, it started after filling up with BP's 'Ultimativ Diesel' and driving on the highway, and then it was running like CRAZY .

Best regards, Manuel.

I had the same impression with my A6, and received the same responses from Audi. Conclusion:

/viewtopic.php?t=6545&highlight=intake manifold pressure+regulation limit

Please provide the text you would like me to translate from German to English. I will provide only the translation, without any explanations.

Hi Svennymann,

Unfortunately, it's difficult to say anything about your problem without log files.
'Based on experience, in addition to the mass airflow sensor (MAF), the solenoid valve for the VTG (Variable Turbine Geometry) adjustment often fails frequently in V6 TDI engines. Therefore, during your next visit to the workshop, try to have the duty cycle logged.'

Post deleted by the author, as the error could not be found.

Hi,

Here's the translation:

'This refers to Variable Turbine Geometry. This describes the control of the turbine's guide vanes in the turbocharger. You can find the valve by following the hose from the turbocharger's wastegate towards the injection nozzle.'