P0089 Audi -

Question

I have a 2008 Audi a4 Quattro 2.0 and had check engine code of P0089. I changed the fuel pump and fuel filter. Why is code still showing up?

Answer 1

P0089 Fuel pressure regulator 1 perfromance

The fuel pump and the fuel filter been change, The fuel pressure sensor  are known to send wrong signals to the controller , reading the fuel pressure as though it is out of tolerance, Audi has a improved fuel pressure sensor which would be required for the solution for this code