- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- GAUSS "GO8021" - Not available
VW - GOL, FOX, Saveiro, Voyage, Parati; AUDI - A4, A6; BMW - 3, 5; ALFA ROMEO - 156, Spider