- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- LRT "L121U" - Not available
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LRT L121U - Oxygen, Lambda Sensor
- AUDI
- Q7
- 4.2 TDI quattro
- Engine
- Exhaust Emission Control
- Lambda Control
