- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- VEGAZ "ULS-231" - Not available
FORD - Mondeo, Focus, Cougar, Maverick, Fiesta; MAZDA - Tribute, CX-9; FORD USA - Explorer, Taurus