P1450 Diagnostic Code: Engine Light Stays On While Vehicle Is Running

I'm experiencing a persistent engine light that stays on while the vehicle is running. The diagnostic trouble code P1450 has been detected, which indicates an issue with the exhaust gas recirculation (EGR) system. This fault code is commonly found in vehicles with EGR-related emissions control systems. I own a [Year] [Make] [Model], and the problem started recently after a routine drive. The engine light remains illuminated during operation, and I've noticed slight hesitation under load. I'm seeking advice on how to diagnose and resolve this issue, especially since P1450 is linked to EGR valve performance or sensor malfunctions.