Audi A8 2019–2021: moisture in the ECM connector, MIL and limited engine speed

Where to start checking

Campaign 97EV checks plug presence and connector corrosion. A production audit found the missing seal; Audi subsequently added leak and plug-presence checks. This is a specific moisture path, not a description of every A8 electrical error.

Volkswagen Group of America / NHTSA repository: Part 573 Safety Recall Report 21V-111 / Audi97EV

When connections need repair

The dated remedy installs a missing plug and replaces corrosion-damaged connections as necessary. It does not unconditionally replace every ECM. The record needs separate seal/contact findings, beyond fault cleared.

Volkswagen Group of America / NHTSA repository: Part 573 Safety Recall Report 21V-111 / Audi97EV

Full material about the model

Which connector plug to inspect, corrosion versus complete ECM damage and the 97EV repair scope.