A self-diagnosing microcontroller includes a microprocessor having first and second applications, and a hardware abstraction layer. The microprocessor is operably coupled to an analog-to-digital converter. The hardware abstraction layer sequentially sets a first pre-check indicator to a first fault value for each encoded channel number of a second plurality of encoded channel numbers that does not have an identical and corresponding encoded channel number in a first plurality of encoded channel numbers indicating an incorrect channel was read from the analog-to-digital converter, and sends the first pre-check indicator to the first application.