What is fault code U053B (83-48)?

This is why God made Google: Mazda fault code U053B means the Image Processing Module "A" is sending invalid data or there is a communication error with a vehicle module. The error comes from the Forward Sensing Camera (FSC) and could be due to a malfunction of the FSC itself, the Body Control Module (BCM), or the vehicle's communication wiring. A professional diagnosis is recommended to identify the specific issue and prevent potential problems from developing further.

Pay particular attention to that last sentence!
 
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