Oxygen, Lambda Sensor Exhaust Oxygen Sensor (O2 Sensor) Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture NAP carPARTS "CLS10102" - Not availableAUDI - 100, 80, A6, Coupe, Cabriolet; JAGUAR - XJ, Xjsc; LANCIA - Dedra, Delta