Trouble Code 36 Help

[CarreraSean]

Hello, I recently hooked a Bergvill F/X scantool with their genuine OBD1 adapter up to my 1995 Porsche 911 (OBD1) to scan it for codes. I only got one from the ECU and it was:

36=Idle CO potentiometer

I did some Googling on it, but I am still not quite sure what this code is in relation to. Some results said controlling idle, so maybe the MAF sensor or throttle position sensor?

I am hoping an expert on here can lend me some advice on where to start.

Thanks!