elmicrobriones

is there any system diagnose, kind of scan to check the ecu errors of an S5 na??

RotaryRocket88

iTrader: (7)

Yes. http://www.banzai-racing.com/FD&S5_error_codes.htm

elmicrobriones

Thanks rotary , another question, for the codes, the one needs to be flashing is the engine light or there's a kind of led in the ecu that's going to be flashing? i was lookin for a kind of led on the ecu and found nothing, that's why i'm thinking is the check engine light.

JerryLH3

iTrader: (11)

It is the check engine light on the warning light cluster that flashes the codes.

fc3s91

iTrader: (23)

There should be a single pin connector near your battery. Its green! Ground it out and count the flashes on your check engine light. S5 only. S4 you need a tool like banzi to pull codes from the ecu.
Thanks Robert

elmicrobriones

I did that and it doesn't flashes. It just stays on.