What does p1004 code mean on a 2006 dodge charger?

The P1004 code on a 2006 Dodge Charger indicates an issue with the intake manifold runner control (IMRC) system. This code typically means that the IMRC is stuck open or closed, which can affect engine performance and efficiency. It may trigger the check engine light and could lead to reduced power or poor fuel economy. Diagnosing the specific cause often involves inspecting the IMRC actuator and related components for faults.