- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Delphi "ES21621-12B1" - Not available
KIA - Ceed, RIO, PRO Ceed, Stonic, Soul, Carens, Picanto, Cerato, Xceed; HYUNDAI - I30, I20, Accent, Elantra, I10, Tucson; ...