Also know, where is the NOx sensor located? The NOx sensor is part of the NOx reduction aftertreatment system used in diesel vehicles with urea based SCR systems. The sensor located upstream of the SCR catalyst directly measures the engine-out NOx gas concentration, which helps determine the optimum amount of urea injection.
Likewise, what happens when a NOx sensor fails? If a NOx sensor fails, the vehicle can have multiple faults on the dashboard which will put your car into limp mode. NOx sensors are directly linked to the SCR system. … These faults include increased fuel consumption, unstable and erratic idle all these are signs that the Nox Sensor could be malfunctioning.
People ask also, how do I reset my Mercedes NOx sensor? Go to the System menu, select Engine, then choose the specifics for your vehicle and go to Functional Tests, followed by Special Functions. At the next screen pick Adaptations then scroll down to find Reset Learned Values Of NOx Sensor Upstream And Downstream Of SCR Catalytic Converter.
Also, can you drive with a faulty NOx sensor? A bad knock sensor may also not let the engine accelerate properly while driving on the highway, and cause the vehicle to lose fuel mileage. … Once the computer realizes the knock sensor is not working properly, your vehicle will most likely lose power.
Contents
Can a NOx sensor be repaired?
The NOx sensor is a very complicated component and can be expensive to repair however, it’s often not actually the sensor which is causing the problem but the lambda probe inside the exhaust which tests the NOx levels which has malfunctioned, and this is something which can easily be replaced.
What causes a NOx sensor to go bad?
NOx sensors monitor the level of nitrogen oxide being emitted by a diesel vehicle to ensure compliance with emissions regulations. … Common causes of failure include soot buildup on the sensor, ECU water intrusion, and/or damage to the cable, which will cause the check engine light to illuminate.
How do I know if my NOx sensor is bad?
NOx Sensor Problems Most times, this will be immediately obvious due to the illumination of your ‘Engine Warning’ light in the dashboard cluster, along with symptoms such as unstable idle, juddering/jerking while driving, and excessive fuel consumption.
Can u clean a NOx sensor?
If you suspect that your oxygen sensor may be dirty, you can clean it by first removing the sensor from its housing in the vehicle, and then soaking the sensor in gasoline overnight.
How do you clean the NOx sensor on a Mercedes?
What does a Mercedes NOx sensor do?
The NOx sensor from Mercedes-Benz supplies up-to-date data on exhaust gas aftertreatment and so plays a valuable role in ensuring that exhaust gas emissions are not exceeded. It is also a vital component for ensuring low fuel consumption and optimum engine performance.
How much does it cost to fix NOx sensor?
The average cost for knock sensor replacement is between $318 and $366. Labor costs are estimated between $183 and $231 while parts are priced at $135. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.
Is NOx sensor covered under warranty Mercedes Benz?
5 Answers. The system is under warranty for 8 years or 80,000 miles….
What happens if I don’t replace my knock sensor?
If the knock sensor is not working then the engine could start pinging without the computer being able to detect it. … If the knock sensor is bad through testing then if it is not replaced the engine may have reduced power, loss of fuel mileage, and hesitations.
What happens if you disconnect the knock sensor?
Disconnecting it will not give you any direct data. If there is a real knock problem, you could end up damaging the engine. Second, if there is an issue with the knock sensor itself, you’d most likely get a trouble code of P0325, which is about a circuit malfunction.