- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- TOYOTA - Hiace, Celica, Corolla, Land Cruiser, MR 2, 4 Runner, Carina E, RAV 4 I, Hilux, Supra, Harrier; LEXUS - RX, LX