- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- LUCAS "LEB4054" - Not available
VW - Passat, Golf, EOS, Jetta, Touran; SEAT - Leon, Altea; AUDI - A3, Q7; SKODA - Octavia, Fabia