Lexus NX300h engine light on due to exhaust system problems on Lexus NX300h

Some Lexus NX300h owners report experiencing issues indicated by the check engine light, often related to exhaust system problems such as malfunctions with the oxygen sensor, catalytic converter, or mass airflow sensor. These components are vital for the proper functioning of the emission control system, and their failure can lead to performance problems like power loss and abnormal vehicle operation. Owners are advised to reduce engine load and address these issues promptly to prevent further damage and ensure efficient vehicle operation. Additionally, some owners find that a loose gas cap can trigger the check engine light, making it important to check and tighten it as a simple troubleshooting step. It is highly recommended for owners to have their vehicle inspected by a qualified mechanic to diagnose and repair any exhaust system issues, as neglecting these problems can result in decreased fuel efficiency, increased emissions, and potential damage to other engine components.