Nox Sensor Issues



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.

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 fuel economy.

The NOx sensor is a very complicated component and can be expensive to repair.

Their high cost is due to the multiple chamber design and the requirement for complex electronics to detect nanoampere current levels.

Call us today to get more information how the Nox sensor issues could be resolved in the easiest and inexpensive manners.