- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Cautex "755121" - Not available
VW - CC, Passat, Scirocco, Golf, Caddy; SKODA - Superb, Octavia; AUDI - A3, TT; SEAT - Exeo, Leon