- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- RECOFICIAL "CSL2222" - Not available
VW - Passat, EOS, Golf, New Beetle, Phaeton; AUDI - A4, A3; PORSCHE - 911, Boxster; SEAT - Altea, Leon; SKODA - Octavia