Van, Truck, Trailer, Bus and Coach Aftermarket News in Ireland

Dealing with a fault in the exhaust system

In their latest workshop video, the ‘Parts Specialists’ from Diesel Technic have to deal with a fault in the exhaust system.

Kevin and Lars not only take care of replacing the defective NOx sensor, but also give useful tips on how to avoid faults in everyday workshop life and explain the function of the sensor.

The initial situation is the main inspection, including the exhaust emission test, which is due on the Parts Specialists’ vehicle.

During the emissions test, the values are determined from the control unit by means of a connected tester. As the vehicle’s emissions control light flashes, the workshop professionals carry out a diagnosis, which shows the error “nitrogen oxide sensor”.

According to Lars, this indicates that the communication is not in order and that the NOx sensor is therefore affected: