- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Delphi "ES21120-12B1" - Not available
VW - Golf, Polo, Bora, Lupo, Sharan; SEAT - Arosa, Toledo; AUDI - A3; SKODA - Octavia
