P2509 — Audi — Powertrain Control Module (PCM) failure, Powertrain Control Module (PCM) power relay failure,…

P2509 (Audi): Powertrain Control Module (PCM) failure, Powertrain Control Module… — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Powertrain Control Module (PCM) failure, Powertrain Control Module (PCM) power relay failure, Wiring issue. Source catalogue definition; confirm applicability using vehicle service information.

Affected system: Powertrain