Volkswagen Passat 1.8T Rear Oxygen Sensor 058906265C 95560613620 Restore emission performance

When a Volkswagen Passat 1.8T shows check engine light with abnormally high fuel consumption, weak acceleration or nose-like exhaust, it usually indicates upstream O2 sensor aging or failure, unable to accurately monitor exhaust oxygen content. The sensor should feed ECU with oxygen concentration to help precisely control air-fuel ratio; ensures catalytic converter reduces pollutants efficiently. Compatible with VW Passat 1.8T (B5/B5.5); OEM 058906265C, also compatible with spare part 95560613620. Use dedicated socket to remove, avoid oil or sealant contamination on threads; torque recommended 45-55 Nm to prevent sensor ceramic element damage.