AUDI A6 2.5TDI AFB VP44

[janusz21]

I have Audi A6 2.5tdi with VP44 pump, I change mosfet IRLR2905 , car starts but I receive fault code 01268 Quantity adyuster (N146) 37-00 faulty , I also try with 3705Z, but the fault still remain.
Any idea?

[ruffles1986]

Problably timming pump trouble. If i remember well use VCDS 01-engine, 11-Login 11223, 08-Meassuring blocks, channel 004 then appear TDI timming, show graphic with timming pump select engine and check it.

[janusz21]

thanks but I think there is a problem with transistor here oscilogram