P1646 — Volkswagen — Check DTC Memory Of All Wheel Drive ECU

P1646 (Volkswagen): Check DTC Memory Of All Wheel Drive ECU — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Check DTC Memory Of All Wheel Drive ECU. Source catalogue definition; confirm applicability using vehicle service information.

Affected system: Powertrain