Oxygen, Lambda Sensor Exhaust Oxygen Sensor (O2 Sensor) Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture MDR "EPS-1998 178" - Not availableINFINITI - Q50, M, Q70, M35; NISSAN - Juke, Micra, Qashqai, Sentra, Sylphy, Tiida