What does the SCR fault light mean?

[VanCharlie]

When the engine SCR fault light is illuminated, it indicates a malfunction in the corresponding component's function. Common causes include insufficient urea levels, nitrogen oxide sensor failure, urea nozzle malfunction, urea nozzle blockage, or urea pump failure. Engines include internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, and electric motors. Below are additional details: Professional equipment is required for fault diagnosis: For such faults, professional diagnostic equipment is generally needed. It is recommended to refer to the maintenance manual provided with the engine for a checklist and visit the nearest service station for inspection and repair. Free repairs are provided during the warranty period. Catalytic reduction technology: Selective Catalytic Reduction (SCR) is a process designed to treat NOx emissions in diesel vehicle exhaust. It involves injecting a reducing agent, such as ammonia or urea, in the presence of a catalyst to convert NOx in the exhaust into N2 and H2O.