P0455 (Audi): Missing fuel cap, Defective or damaged fuel cap, Distorted or dama… — what it means, the affected system and what to check before replacing parts.
Missing fuel cap, Defective or damaged fuel cap, Distorted or damaged Fuel Tank Filler Neck, Torn or punctured Evaporative system hose(s), Defective Fuel Tank Sending Unit gasket or seal, Split or damaged Carbon Canister, Defective Evaporative Vent Valve and or Evaporative Purge Valve, Defective or damaged fuel tank, Defective Fuel Tank Pressure Sensor. Source catalogue definition; confirm applicability using vehicle service information.
Affected system: Powertrain