- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- FAE "77407" - Not available
AUDI - A4, A6, Allroad, TT, A8; MERCEDES-BENZ - CLK, E-Class; FIAT - Doblo, Punto; CITROËN - Xsara, C5; ALFA ROMEO - 156, 166