’16 Polaris 450 HO Diagnostic Code Troubleshooting

Hey ya'll,

I've got a 2016 Polaris 450 HO and recently have had some trouble codes appear. Only one appears in the shop manual:

ERROR CODE #1
520285 Component: Break Switch(1 or 2) Indeterminable Condition: Break Switch Correlation Fault (see attached)
I'm thinking this could be the rear master cylinder? The back breaks never worked that well and don't seem to be working at all - but just a guess.
Can replace but before I do wanted to seek some advice. What's throwing me is the reference to "switch"...break switch?

ERROR CODE #2
520468 (I googled as this is not in shop manual as noted above). Only one I found is someone said its likely the clock as error codes don't go up that high? (huh?). I've disconnected and reconnected the battery to clear codes but they reappear. Voltage on battery is good 12.56+.

Input appreciated.

Thanks!

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Cooling systems fluid

I have a 2015 Sportsman EFI 570. My "know it all" boyfriend put in standard radiator fluid. My question is... what are the ramifications for not putting in the 50/50 required by polaris?

What is this?

I found this on the floor of my truck when I got home with my 02 Polaris 500 HO.
Any ideas on what it is and if its important? Thanks!

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04 Polaris 400 AWD sportsman Trans removal and inspection

HI, new to Polaris ATVs forums, my 04 Polaris 400 sportsman has a grinding noise when shifting into Low or Reverse. Can someone provide me directions on how to remove the transmission and opening the tranny to visually inspect it? What will I be looking for? I saw some videos on youtube and they also provided a lot of information also. I also attached some pics below.

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2015 xp front gearcase fill plug

Used an English hex by accident, rounded hex socket plug on front gearcase fill plug. Failed to remove with extracting bits. Tig welded nuts and bolts to plug but could only access top side of plug so weld continually broke. Any other methods in this tight space? I plan on drilling it out and sucking up the $30 for a new one.
Does anyone know if it's a standard SAE plug?

Uncontrolled High revving from polaris predator 500

Hey guys, I'm having a problem with my 04 polaris predator 500. It will start up and idle great, but then it it gets to operating temp./ warmed up and idles up extremely high so I run over to it and shut it off. When I am riding it and pull in the clutch it does the same, idles up extremely high. The only way I can control this is having a load on the engine such as applying the brake when it is in gear to keep the rpms were they should be. And no, it is not the idle screw. I swapped carbs from a parts four wheeler and it does the same thing. I also saw the thread when a dude had the same problem and it was his throttle cable. I have yet to get the new one in to see if that is the problem. Leaning towards a vacuum leak but I've coated that thing with carb cleaner and couldn't find anything. Any help would be appreciated!