- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- FAE "77697" - Not available
VW - Golf, Polo, T-ROC, Passat, T-Cross; SKODA - Octavia, Fabia; SEAT - Leon, Ibiza; AUDI - A3, A1; CUPRA - Formentor, Leon