Camera Showing Black Screen

My reverse camera switched to black all of the sudden, i checked the connector and everything seems ok. How can i be sure that it's the camera that needs replacement and not something else before buying a new one ?

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If it is a factory installed unit, get your car scanned and it should throw a code.

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it is factory installed, but i scanned the whole car many times it didn't show any codes

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What year and model is your vehicle?

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