Had the same problem but intermittent. Laying under the car, looking up follow the wires from the rear02 sensor to a plug. You should wires in that area that have been rubbing to ground as there is some movement allowed.
You have a bare wire that keeps shorting out & blowing the fuse, I had the same problem. The wire is the one that runs from the fuse to the fuel pump. The casing has melted away and now the wires are touching.
Answer: Depends if its a VW or a Ford. Vehicle undercarriages can be washed. External components are covered to keep mud and moisture away from electrical connections and wiring. The fuses are also covered from outside elements.
Find out why the fuse is blowing. You have a short or the circuit is overloaded.
Short in the wiring is the most likely cause.
It is very common for the starter to be the cause of that fuse blowing.
If fuses keep blowing on your Honda, you likely have a short somewhere. You can get a multimeter and a copy of the wiring diagram so you can track down the short, or you can have a mechanic do it. If you've recently installed anything new such as a radio or a gauge or switch, that would be where you want to start.
There is an electrical short to ground in the fan switch or in the blower motor itself.
The fuel pump is going bad, or the filter is so clogged that the pump is using too many amps to run.
could be that the regulator in the alternate is failing and causing power surges in the electronics and the fuses are blowing to prevent damage to the device and vehicles wiring.
There is a short somewhere.
A short somewhere in the wiring, an incorrectly installed bulb, damaged horn ring assembly, etc.
for fuse to keep blowing, there is a short in the eletrical system somewhere. check the a/c switch and the a/c clutch