- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Delphi "ES21477-12B1" - Not available
VW - Caddy, Touran, Tiguan, Transporter, Golf; AUDI - Q3, A3; SKODA - Kodiaq, Octavia; SEAT - Tarraco, Ibiza
