2015 Q5 TDI hesitation and throttle cut-out
 

I have a 2015 TDI with about 85K on it. It had the emissions fix about 10K miles ago. For the last 5K miles or so I have been getting what I thought was increasing turbo lag but now it will intermittently not go when I step on the accelerator then surge forward. Its hard to describe. It also threw a code once and put me in limp mode. I had to pull over. Turn off the engine. Started it back up and the error went away. I did do a scan and will post the fault later when I get home. Its getting worse and worse. I did a bit of digging. Someone mentioned a possible HPFP failure in the making. This combined with the ****ty gear shifting from the modifications make the shifting pretty bad.

Does anyone have any experience with these symptoms?

I read the 4/48K emissions warranty should cover whats going on. IDK? Thoughts?

Have you had the fuel filter replaced per the maintenance schedule?

Have you tried the throttle / transmission reset? It has helped some folk.

https://www.audiworld.com/forums/q5-...osted-2942292/

Yes, this has been slowly getting worse...

Yes, this helped for a day then bammm. Back to lag.

I looked at the codes thrown. Undefined faults. 2 of them. It provided just basic freeze frame data. HMmmm. I guess back to the dealer for me....

Oudimon what device are you using to read those codes ?

Wasn't there a recall for low pressure fuel pump issues?

VAGCOM