kelbahi

While driving along today, my 03TT turned off. I safely pulled to the side and had the car towed home. I scanned it with my durametric and found the code"P0261 - Porsche fault code 150 - injector circuit cylinder 1" (and similar for all cylinders.)
I could not find any info the code above, so I preceded to track this down assuming a fuel pump fuse/ relay / pump issue.
With the durametric, I can hear th fuel pump when activated, which I am assuming elimiated the theory above ( perhaps not )

I'm stuck at this point, any suggestions on how to proceed?
Thanks,

LexVan

Ignition switch? Lots of keys on your key ring??

kelbahi

nope, just 1 key.

FRUNKenstein

Still, go to NAPA, spend $12, get a new ignition switch and swap it out. If nothing else, you eliminate a very common cause of gremlins in the 996. Plenty of threads in here and the NA 996 forum about exactly how to do this.

Carlo_Carrera

+1 For replacing the ignition switch and check fuel pressure at the injector rail. A hose on the fuel pump may have split causing a loss of fuel pressure.

kelbahi

Thanks, I'll try these out tomorrow.

fpb111

+1 one the fuel pump hose.

r6vr6

Not that familiar with the 996 electronics yet but most cars have a fuse for the injectors. I would check that first.

996tt6156R

32krazy!

this is generic but it will give you a place to start

https://www.obd-codes.com/p0261

if your getting codes from all 6 injectors its unlikely it would be the injectors themselves. that would lean to an electrical not a mechanical issue

kelbahi

I tried the following with no luck
1. Looked at the fuel pump for a broken "U" hose - I took the cover of the pump housing off, looked at the hose, it looks fine. I did not pull the pump out.
2. replaced the ignition switch
3. 'jumped" the fuel pump relay - pump starts right away.

Still no luck.

Any further suggestions from here? I'm still following the of no fuel or no spark theory. is there a good DIY on checking fuel pressure/flow at various locations?
Thanks,

nbressette

You could pop off the return hose while jumping the fuel pump relay, that would tell you if fuel was circulating.

Carlo_Carrera

Yes, before you move on you have check fuel is getting the injectors.

996tt6156R

That code is an injector issue or wiring.

kelbahi

Well, that was a good thought. I pulled fuse C2 and - well it was blown. I popped in a new one - car starts right up. Now, the mystery is what caused the fuse to blow.