What does the SCR fault light mean?

[DerekDella]

SCR fault light may be caused by the following reasons: insufficient urea level, nitrogen oxide sensor failure, urea nozzle failure, urea nozzle blockage, urea pump fault light. Here is some relevant information about the SCR fault light: 1. Definition: SCR refers to the Selective Catalytic Reduction system, which functions similarly to the three-way catalyst in gasoline vehicles. It uses catalysts in the conventional muffler, along with a urea supply system and injection control system. It is primarily used to treat NOx in diesel engines. Simply put, it processes the exhaust gases. 2. Impact of SCR fault light: For the vehicle, the SCR light coming on can cause the engine to reduce power. In severe cases, if not addressed promptly, it may even lead to the pump burning out.