- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- APC "SAS970031" - Not available
VW - Bora, Golf, Passat, Transporter, New Beetle; AUDI - A4, A6; SEAT - Leon, Alhambra; SKODA - Octavia