- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- StartVOLT "VS-OS 2901" - Not available
BMW - 3, 5, 6, 1, 7; SKODA - Fabia, Octavia; VW - Polo, Golf; AUDI - A4, A3; ALFA ROMEO - 159, Spider