Oxygen, Lambda Sensor Exhaust Oxygen Sensor (O2 Sensor) Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture Fispa "90396" - Not availableTOYOTA - Camry, Avensis, Kluger, MR 2, Picnic; BMW - 3, 5; LEXUS - IS, GS; AUDI - A4, A3