EGR system service

What is EGR and its function?
Meeting the various global emissions challenges, EGR works by reducing the amount of oxygen in the cylinder, which lowers combustion temperatures. It's an efficient process for reducing NOx. Exhaust gas recirculation (EGR) is used to reduce the levels of NOx emitted by the engine.
What is the most common causes of EGR failure?
3 Common Causes of EGR Valve Problems
Faulty Temperature Sensor. As discussed above, the most important goal of the exhaust gas recirculation system involves reducing nitrogen oxide levels. ...
Clogged EGR Pipe. ...
Sticky EGR Valve.