raj99

Hi Rusa,

What does your vag-com log look like? You may have the same issue, i.e. no start, however the cause and actions required to remedy might be quite different.

Rusa

I have these 2 codes
P0562
P0687

raj99

Were those pulled by a vag-com or a generic obd scanner? The latter is usually worthless

Rusa

Vag-com

haloguy628

If you fix the relay by tapping on it you are really not fixing it because it will happen again at decreasing intervals until the relay burns out. To save yourself the hassle just get new relay that cost around $25.

G-Can

Motronic Engine Control Module (ECM) Power Supply Relay J271
J623 - Engine Control Module (ECM)

Can anybody help with where to buy these, or even where are they located, and how to they look.
I googled to all my known sources, and these two items are literally showing up only on this forum.

I have weird starting issues, and have a feeling these might be exact culprit!
As I tried everything, and there is no codes.

Jason64

I've have a 2005 A6 quattro 3.2 that turns over but won't start giving no codes no check engine lights on it's the strangest thing. Was running fine then out of nowhere I take it to work park it for my shift and it has not started since. I've changed the fuel filter, vacuum lines, fuel pump and checked all the fuses nothing has done the trick. Does anyone know where the relays are located for the fuel pump. I am very new to the Audi world so really know nothing about this car but I couldn't pass up the deal I got on it now I think I know why. Hahaha also I was reading up on a high pressure fuel pump in these cars where is this located if anybody knows. Any help would be fantastic cause I am at a loss as to what the hell is going on with this car. Thanks

kvn7

High pressure fuel pump is usually next to the intake manifold. You can use a obd reader to see the fuel pressure in the rail, to see if that is causing the issue. Have you tried the simple classic jumpstart? It might just be the battery is too weak to turn it around properly, does your dash blink/go black when u try to start it?

Jason64

Yeah I forgot to mention I put a brand new battery in it also but I have not put my meter to it yet nor have I pressure tested anything.

jonzie77

The fuel pump fuse is on the passenger side of the car (right) and I'm pretty sure it is identified on the cover you remove to access the fuses.