What is a downstream NOx sensor?
The NOx sensor downstream of the SCR catalyst is used to monitor the performance of the catalyst. Accurate NOx measurement is in high demand to comply with increasingly strict NOx emissions regulations. The NOx sensor is also capable of measuring O2 concentration, just like a wide range air-fuel sensor.
Why do I need to replace my NoX sensor?
In both instances of these diagnostic codes showing up, you may need to replace your NOx sensor. These codes indicate that the NOx sensor A (for U029D) or B (U029E) is not communicating with the other control modules in your Mercedes. The most common reason for failure is a circuit fault. If you experience this issue, you
What was the error message of the upstream catalytic NoX sensor?
Broadcast announce message of the calibration message of the upstream catalytic NOx sensor has failed. 135 523940 9 7-6-6 Kalibrierbotschaft 2 von dem Vor-Kat Nox-Sensor ist ausgefallen. Timeout error (PCK2PCK) for CAN-Receive-Frame AT1IGCVol1. 136 3234 2 1-1-4 DLC Error von dem CAN-Receive-Frame AT1O1.
What does it mean when your NoX sensor says p2022?
P2022 code A P2022 is a diagnostic trouble code which usually indicates that your Merc has a damaged or defective NOx sensor. It can be simply caused by road debris, such as ice or snow, blocking the sensor, so check your vehicle first before taking it to a professional.
Why is the NoX sensor on my Mercedes not working?
These codes indicate that the NOx sensor A (for U029D) or B (U029E) is not communicating with the other control modules in your Mercedes. The most common reason for failure is a circuit fault. If you experience this issue, you should get it checked out as soon as possible, as the PCM will no longer be able to check emission levels.
Why is my NoX sensor not working properly?
It can be simply caused by road debris, such as ice or snow, blocking the sensor, so check your vehicle first before taking it to a professional. Some common symptoms of a vehicle which has a NOx sensor displaying this code include the check engine light being illuminated, excessive smoke from the exhaust and inconsistent fuel economy.
P2022 code A P2022 is a diagnostic trouble code which usually indicates that your Merc has a damaged or defective NOx sensor. It can be simply caused by road debris, such as ice or snow, blocking the sensor, so check your vehicle first before taking it to a professional.
How much does it cost to replace a NoX sensor?
RockAuto sells the O2 (oxygen) sensors, which I think you are referring to, for this vehicle in a bunch of varieties, but the most expensive they got is $114. In any event, I would think that after replacing one a person would simply have to clear fault codes, which would take five minutes.
What does NoX sensor stand for in car?
What is a NOx Sensor? We shall begin by going over what a NOx sensor is and how it can affect your vehicle. NOx stands for nitrogen oxide, and the sensor measures the levels which your vehicle puts out into the world. Typically, you will find these indicators in vans, but they can be put into cars as well depending upon the situation.