What does this code mean P1421 on suzuki xl7?

The P1421 code on a Suzuki XL7 indicates an issue related to the Secondary Air Injection System. Specifically, it typically signifies that the system is not functioning correctly, possibly due to a malfunctioning air pump, a blocked air passage, or a faulty relay. This can lead to increased emissions and may affect engine performance. It's advisable to diagnose the system thoroughly to identify and rectify the underlying cause.