probably fuse but there may be problem inside radio try fuse first then pull apart radio and check inside where power comes in for melted terminal or internal fuse resolder it and check it out
something on that circuit is shorted, the short needs to be repaired.
There is an overcurrent situation in the circuit, could be a wire shorted to ground.
it no longer rectifies the current it is either open or shorted must be replaced
The blower resistor is internally shorted to power and needs to be replaced.
The wire may be shorted to the frame.
shorted a wire? knocked a wire loose?
Something is shorted to ground on that circuit
It depends on weather it is in a parallel or series circuit. In parallel the entire circuit it is in parallel with is shorted out. In series the total resistance decreases by the amount of the resistor that shorted out. Resistors usually open or change value with use.
Something is shorted to ground.
You probably have shorted wires inside the combo switch. The assembly will need to be replaced.
There is a strong possibility that SOMETHING is connected wrong or shorted to ground. If I remember right there is a harness under the seat that gets chaffed, and causes the short. Not to say this is the case for sure. But a spot to check.
The code refers to the front oxygen sensor on bank 1. That O2 sensor needs to be replaced or the wiring has come loose or is shorted out.