The check engine light is on but there are no error codes. HOw do u turn it off on 2008 Dodge Durango

Pulled the negative battery cable and then when we restarted the vehicle the check engine light remains on

Asked by for the 2008 Dodge Durango
If the Check Engine Light/Service Engine Soon light illuminates while you are driving, the car's on board computer sees a fault in the engines management system that is causing an excess amount of pollutants to be emitted from your car. This could result in engine damage if left neglected. Some problems that can cause the Check Engine light to stay on may take two "drive cycles' to complete before illuminating the Check Engine Light. The computer sees a problem and looks for an identical set of circumstances to occur to confirm that it has indeed seen a problem before turning on the light. A Check Engine light that continually flashes while you are driving is serious and is a sign that the computer sees a problem that seriously risks damaging the catalytic converter which may result in an expensive repair or even may cause a fire! Diagnostic codes are stored in the vehicle's computer and can be retrieved using a scantool that communicates with the computer in your car. We have in our Repairpal website an encyclopedia with in depth articles about computer, and computer control systems, emission and driveability problems.
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if the light is on, there are codes. your code reader may not read them.

You need a real shop with a real tech to check it for you. clearing it will do nothing. it needs to be diaged and repaired.