- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- OPEL - Insignia A, Astra J GTC; CHEVROLET - Camaro, Corvette; SAAB - 9-3, 9-5; CADILLAC - ATS, Escalade; HUMMER - Hummer H3; ...