- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- FORD - Focus, Mondeo, Fiesta, B-MAX, Grand C-MAX; FIAT - Ducato, 500x; ALFA ROMEO - 159, Spider; JEEP - Renegade, Compass