Exhaust Gas RECIRCULATION: Description

Honda uses exhaust gas recirculation on all models to reduce oxides of nitrogen (NOx) emissions. The system includes a special intake manifold and cylinder head, EGR control valve, EGR control switch, EGR control solenoid valve, and throttle opener solenoid valve. A speed sensor, thermosensor, and EGR valve complete the system. A barometer switch, a second EGR control solenoid valve, and a second thermosensor are also used on California models.