- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- FAE "77702" - Not available
VW - Passat, Golf, Polo, Tiguan, Caddy; AUDI - A3, A1; SEAT - Leon, Ibiza; SKODA - Octavia, Yeti