2004 996 turbo X50 cab Check engine light on, indicating a problem with the secondary air injection system. Anyone know the location of any fuses or relays pertaining to this system? Any input greatly appreciated.

 

I have read there is a relay. Location varies from coupees vs cabs I am told. In my case with a cab, I believe the relay is next to the ecu and yours might be the same.

 

Thank you for your response. Have the roof/shell in the service position and the bank of relays exposed. Any idea which relay would be the culprit?

 

I can only tell you where mine (I think is located) Attached photo is what someone p[osted a few weeks back. Take a look around and see if you something similar. I would start if you have a coupe, pulling the carpet back from the rear where ECU is located and see

 

Thank you, this really helps !