- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Delphi "ES21091-12B1" - Not available
VW - Golf, Caddy, Polo, Beetle, Touran; SKODA - Fabia, Octavia; SEAT - Toledo, Ibiza; AUDI - A3, A1
