- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Delphi "ES20541-12B1" - Not available
VW - Passat, Transporter, Caddy, Crafter 30-50, Golf; AUDI - A4, A5; SEAT - Alhambra, Altea; SKODA - Octavia, Superb