Oxygen, Lambda Sensor Exhaust Oxygen Sensor (O2 Sensor) Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture Metzger "0893495" - Not availableTOYOTA - Auris, Avensis, Prius, RAV 4 III (ZS), IQ; LEXUS - LS, GS; OPEL - Astra J