first check/test battery and connections
low voltage will cause all sorts of crazy codes

P0685 ECM/PCM Power Relay Ctrl Circ /Open

 

That's a "Accessory Relay" fault.

It detected that either it didn't switch when activated or it stayed on after being turned off. Wiring, fuse or defective relay.

Agreed with chris. Low voltage will cause those too.

 

I did notice that my air separator would run for a while then shut off then run and shut off again. I did have some troulbe with the accessory power on the bottom of the 3 prong terminal next to seat. Wiggles the wires and worked fine. Anything there I should be looking directly for??

 

Maybe disconnect all accessories from those terminals and add back one at a time to see when your problem shows back up. Maybe you have one of your switches back feeding one of those 3 terminals / wired wrong

 

Find the solution to your problem? I have the same code and tried everything listed above, Wondering if my voltage regulator went out? Reading 14.6v when its on , called a shop and they said it was on the high end but read some more forums and it said 12.5-14.6 is okay so dont know what to think about this.

 

The shop you called are clueless. 14.6 is great so no charging issues. What is your battery voltage after being off for a while? 12.5 volts as your shop said is not charging at all lol.....
So, you checked or changed the acc relay PF1-R3 I would change out that relay and see what it does.

 

so i have a 2018 xrs w/ dps so i only have the fuse box in front of the break reservoir, dont have one under the dash or behind the seat. Unless there is another location for them, i do think it is weird i dont have any other fuse boxes.

 

You sure you don't have any behind the seat?

 

100% my buddy has his 19' xrs and his is behind the seat too right next to the ecm this is the only panel i have.

 

Alright update time, took it to a shop to have them diagnose the problem and they had it for two weeks couldnt find it reset codes and ecm swap everthing they can thing of. Took it home and strapped for time before my next trip i said **** it and tear the whole car myself and undo the whole harness and found this busted wire for the acc relay about 6" under the fuse box, glad it was found spliced it and reconnected it and code went away🤘🏼

 

Alright update time, took it to a shop to have them diagnose the problem and they had it for two weeks couldnt find it reset codes and ecm swap everthing they can thing of. Took it home and strapped for time before my next trip i said **** it and tear the whole car myself and undo the whole harness and found this busted wire for the acc relay about 6" under the fuse box, glad it was found spliced it and reconnected it and code went away🤘🏼 View attachment 289826
View attachment 289827

Can you tell what caused the fault ultimately?
Melted wire jacketing? I assume it exposed the conductor to a ground, possibly the chassis? What would you guess was drawing enough amperage to melt the jacketing if that is what exposed the conductor, or if there might have been a cut in the jacketing?
Or was the wire possible smashed in some way to cause the fault?

What is the function of that wire, where does it go, if you tracked it back on the wiring schematic?
Be interesting to know if it was a failure of a stock system, or if it has something to do with a added accessory?

Great job finding the problem , and posting back here to document for others to reference and learn from.

This appears to be a ~17' or 18', older rigs based on the fuse box configuration?

 

Way to get after it! Any idea how it got that way? Kinda looks like it was rubbing or pinched.
I'm impressed and doubt I could have stayed with it that long.

 

Way to get after it! Any idea how it got that way? Kinda looks like it was rubbing or pinched.
I'm impressed and doubt I could have stayed with it that long.

Im thinking it just rubbed on the chassis through the loom and didnt see it initially when we took everything apart saw it after the whole harness was exposed