P0501 (Audi): Defective Vehicle Speed Sensor, Defective Speedometer, Vehicle Spe… — what it means, the affected system and what to check before replacing parts.
Defective Vehicle Speed Sensor, Defective Speedometer, Vehicle Speed Sensor wiring or connector, Communication (CAN) bus problems, Defective transmission or differential Vehicle Speed Sensor drive gear. Source catalogue definition; confirm applicability using vehicle service information.
Affected system: Powertrain