- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- FAE "77127" - Not available
CITROËN - ZX, XM, AX, C15, Xantia; PEUGEOT - 405, 306; FIAT - Ducato, Ulysse; LANCIA - Zeta, Kappa; FORD - Escort, Sierra