- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- OPEL - Astra, Corsa, Insignia A, Vectra, Mokka; PORSCHE - 911, Boxster; VAUXHALL - Astra, Agila; CHEVROLET - Cruze, Aveo