NOx Sensor
The NOx sensor measures nitrogen oxides in the exhaust so the SCR system can dose the right amount of AdBlue.
What is NOx Sensor?
Most SCR diesels have one sensor before and one after the SCR catalyst. The sensor has its own control module attached to the cable. It also checks that the system really reduces NOx, which is required by law.
How it works
A heated ceramic element measures oxygen and NOx and sends values over the network.
Why it matters for your car
Faulty NOx sensors are a common cause of SCR warnings and power limits. They are expensive, so the cause should be confirmed with live data first.
Other terms
- Auto Hold (Brake Hold)
- Battery Tester
- Charging Losses
- Clear Coat Failure (Lacquer Peel)
- Closed Loop (Fuel Control)
- Control Arm
- Door Ding (Parking Dent)
- Dry Sump Lubrication
- FlexRay
- Mode 3 Charging Cable (Type 2 Cable)
- Off-Peak Charging
- Onboard Charger
- Roadster
- Solid-state Battery
- Traffic Sign Recognition
- Valet Mode
- Variable Geometry Turbocharger (VGT)
- Vehicle Category (M1, N1)
- Vinyl Roof
- Window Regulator