U1008Diagnostic interface (gateway) reports stored codes

• Volkswagen group code · Engine

How the car detects it

The engine computer notes that the data-bus diagnostic interface (gateway) holds fault codes of its own. Read the gateway's codes.

What you may notice

• Usually none by itself

Likely causes

• LikelyFaults stored in the gateway or other modules

Sources

• static.nhtsa.gov › MC-10185659-0001.pdf · official document

Backed by an official manufacturer document.

From Obdaryn's Volkswagen group pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.