Dodge Magnum persistent check engine light due to short runner valve malfunction with error code P1004 on Dodge Magnum

Some Dodge Magnum owners report experiencing issues related to a persistent check engine light due to a short runner valve malfunction, indicated by the error code P1004. This code signifies a malfunction in the Short Runner Valve Control, which is essential for regulating airflow to the engine and optimizing performance at various speeds and loads. Possible causes for this issue include a faulty short runner valve assembly, problems with the valve harness, poor electrical connections in the valve circuit, or a malfunctioning Powertrain Control Module (PCM). Repair costs for addressing the P1004 code can range from $150 to $500, depending on the necessary parts and labor. Owners may also notice symptoms such as decreased fuel mileage, engine hesitation or misfiring, and rough engine performance. Prompt attention to the underlying cause of the P1004 error code is recommended to maintain the performance and efficiency of the Dodge Magnum.