- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- EFI "301786" - Not available
KIA - Ceed, PRO Ceed, Cerato, Carens, RIO, Soul, Venga, Picanto, Sportage; HYUNDAI - I30, Accent, Elantra, I10, I20, Tucson; ...