It sounds like your Ford Mustang is suffering from a sensor power or ground problem, either at the ECU or at the ground/power source. Wherever the fault is, it's effecting multiple sensors at once. Your trouble code scanner may not be communicating with your Ford's ECU more than likely because it's not getting power, ground, or a signal voltage from the DLC. You want to ensure all ECU wiring harnesses are secure and connected to proper ground and power sources.
