- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- AIC "54525Set" - Not available
VW - Bora, Golf, New Beetle, Passat, Transporter; AUDI - A4, A3; SEAT - Leon, Ibiza; BMW - 3, 1; SKODA - Octavia