- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Delphi "ES21129-12B1" - Not available
VW - Tiguan, Polo, T-Cross, Touran, Golf; AUDI - A1, Q3; SEAT - Ibiza, Arona; SKODA - Kodiaq, Octavia