- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- RECOFICIAL "CSL2220" - Not available
VW - Passat, New Beetle, Golf, Jetta, EOS; AUDI - A4, A3; PORSCHE - Panamera, 911; SKODA - Superb, Octavia; SEAT - Exeo, Altea