Robust fault diagnosis for electronic devices

A method of facilitating fault diagnosis for an electronic device, the method comprising:

• providing an electronic device comprising a component comprising a first processing element configured to generate diagnostic information indicative of a fault occurring in the electronic device, and a persistent display coupled to the component and configured to display the diagnostic information;
• generating the diagnostic information by a fault diagnosis module executed by the first processing element of the component, wherein the component is configured to perform a self-diagnosis and diagnose the fault in another component comprising a second processing element within the electronic device, and further wherein the fault diagnosis module interfaces with a sensor;
• producing, by the fault diagnosis module, an alpha-numeric error code as the diagnostic information based on detecting an abnormal reading of the sensor, wherein the abnormal reading of the sensor is detected based on a determination that an output of the sensor is outside normal operating limits;
• providing the diagnostic information as a bar code based on state information indicative of the last instruction executed by the second processing element prior to occurrence of a terminal fault that shuts down the electronic device;
• converting the bar code to a text-based version of the diagnostic information;
• sending the diagnostic information from the component to the persistent display;
• displaying the diagnostic information on the persistent display;
• and
• addressing, by an end user of the electronic device, the fault associated with the electronic device using the diagnostic information.