I searched and thought I had what I needed until I became confused. I'm trying to find out how to pull S5 error codes because I get a check engine light when I boost at all above 1-2psi. Anyway after searching I found how to test the ECU Voltage but this isn't what I need right? How do you pull codes on a S5? is it like a S4 or what? I have no idea and I am at square one. BTW my 02 sensor is most likely bad, could that be why is is popping up under boost or is it the boost sensor?

DAMMIT-thanks in advance

 

I'm pretty positive that if your check engine light comes on when you're boosting that means you're knocking.

 

I seriously doubt it in my situation, why would it be knocking? This happens EVERTIME i boost, whether it's 1 psi or 5, I can be hitting the throttle quickly and it will flash off and on. I mean, something is up, I don't think it's knocking.

 

What if it's just a bad knock sensor?

 

are you using the N/A pressure sensor?...


codes

http://www.1300cc.com/howto/how2/codes.html

 

No I have a S5 TII uncut harness in my GTUs.