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.

Are Mercedes replacing NOx sensors?

As previously announced, pursuant to an administrative order by the German Federal Motor Transport Authority (KBA) Mercedes-Benz has been carrying out mandatory recalls related to diesel emissions, in which software updates are being installed. If technically necessary, NOx sensors will be replaced, as well.

What does a NOx sensor do on petrol engine?

The NOx sensor is responsible for measuring the vehicles’ NOx levels produced following the combustion cycle. Its role is to monitor and observe the catalyst’s performance to ensure that the system isn’t producing excess gases.

Can I still drive with a faulty NOx sensor?

Of course, you can drive with a bad Nox sensor. However, I do not recommend it. Driving with a faulty Nox sensor for an extended period will cause several drivability issues. It may cause poor engine power output, erratic idling, sudden engine misfire, and bad gas mileage.

What does a Mercedes NOx sensor do? – Related Questions

How much does it cost to replace a NOx sensor?

How Much Does It Cost to Replace a NOx Sensor? This depends on the OEM, truck model and where you buy from. A new OEM NOx sensor is usually in the range of $450–$750USD, but they can be higher.

Do petrol engines have NOx sensors?

The development of exhaust gas NOx sensors started in the 1990s. Commercial sensors were first introduced in the early 2000s on lean-burn, stratified charge gasoline passenger cars with NOx adsorbers, followed by diesel cars with NOx adsorbers and light- and heavy-duty diesel engines with urea-SCR aftertreatment.

What causes NOx sensors to fail?

Most engines feature two NOx sensors: an upstream and downstream sensor. 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.

Are NOx sensors important?

The NOx sensor is an important component in the post-treatment system to reduce NOx, which is used in diesel vehicles with urea-based SCR systems (selective catalytic reduction). The sensor enables compliance with the stringent emission values starting from Euro 5 norm onwards.

Is oxygen sensor and NOx sensor the same?

Is the NOx sensor the same as a Lambda (Oxygen) Sensor? The short answer is NO. While one component measures oxygen gas, the other measures nitrogen oxide gas. Both are valuable in their own way.

How do you reset a 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.

Where is NOx sensor located?

The NOx Sensor is a sensor commonly mounted on the exhaust system before and after the Selective Catalyst Reducer (SCR). The sensor located before the SCR, monitors the nitrogen oxide level being emitted by a diesel engine.

How does a diesel NOx sensor work?

The NOx sensor has a dual chamber design that measures both Oxygen and NOx content. As exhaust enters the sensor the Oxygen is pumped out and the NOx finds its way to a second chamber where the gas is exposed to a catalyst that calculates and reports that information to your computer.

Does NOx sensor affect AdBlue?

What happens if the NOx sensor goes wrong? If the NOx sensor goes on the blink, the car’s SCR system doesn’t know how much AdBlue to inject into the exhaust system. Rather than not injecting enough and possibly causing polluting exhaust gases to be emitted, it’s likely to inject more than the car needs.

Is NOx sensor part of exhaust system?

Attached directly to vehicle exhaust pipes, these NOx sensors allow precise measurements of NOx concentration in exhaust gas for extended periods. NGK is bringing these NOx sensors to market which integrated with sensor control units capable of operating independently of engine control units (ECUs).

What does NOx stand for?

Nitric oxide (NOx)

Nitrogen oxides (NOx) are a common term for the nitrogen oxides N2O, NO, N2O3, NO2 and NO3 and are a chemical compound of oxygen and nitrogen that is formed during the combustion of fuel and organic material at high temperatures.

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