. Top Answer. They dont need anything more then 120V. P0652 is a diagnostic trouble code (DTC) for "Sensor Reference Voltage âBâ Circuit Low". If I plug the iron in, the stove surges. Top Smart TV features that you’re missing out on! There are various standards that define extra-low voltage. The supply voltage could also be low because of high demand from a large power user. This would generate an excess of voltage streaming and cause excessive flow of current in the power source. This is a nightmare.