- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Delphi "ES21125-12B1" - Not available
KIA - Ceed, PRO Ceed, RIO, Venga, Cerato, Carens, Picanto; HYUNDAI - Accent, IX20, I30, I20, Getz, Elantra, I10