Audi A5/S5 Tech DIY
I recently bought an Audi A5 1.8 TFSI and after driving it daily for a month or so the EPC light came on as well as I got this message in the dashboard: start-stop system: system fault function unavailable.
I checked the car for fault codes, I got:
P256300 Passive/Abiogenesis. Turbocharger...