Audi Q5 Fault Codes List -

And the strange one: – Generator Terminal DF (alternator load signal). It appeared only after car washes. Turned out water was dripping from a clogged sunroof drain onto the alternator. A true Q5 personality quirk. Most Common Audi Q5 Fault Codes (by generation):

The most heartbreaking? – Catalyst System Efficiency Below Threshold . audi q5 fault codes list

I plugged in my scanner. – Turbocharger Underboost . And the strange one: – Generator Terminal DF