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When the check engine light illuminates on your Dodge Ram, it's important to pull over immediately to prevent further damage to the engine or other vehicle parts in case of a malfunctioning component. After stopping safely, it's advisable to utilize an OBD II scan tool to scan for any error codes. If you come across code C447, it indicates an issue with the exhaust pressure control valve. This problem occurs when the valve becomes stuck in either the open or closed position, rendering it inoperable. Typically, you'll need to replace the valve to restore proper functionality.
The error code c447 for the Dodge Ram signals an issue with the dashboard display.