0520207-4 check engine code RESOLVED - Polaris RZR Forum - RZR Forums.net
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post #1 of 9 Old August 18th, 2019, 11:34 AM Thread Starter
 
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0520207-4 check engine code RESOLVED

Went for a ride with a buddy this morning and made it about 6 miles before getting a check engine light. I looked at the code, but without having a service manual on my phone or signal in that remote part of the state, I was limited to just trying to diagnose on the hill looking at symptoms only. Along with the check engine light, I had lost power to my accessory plug, accessory fuse block, lights and AWD indicator.
First thing, check fuses and relays. No bad fuses and all relays seemed to be in order. My motor sounded smooth and responsive without any missing. My guages all worked on my instrument pod. Power steering was still on. So, from the surface, it looked like a wide spread electrical failure. I felt that I had no choice, but to head back and get to service, bring it home and tackle the problem in my garage.
Once I found service, I pulled into a camp site and started going through forum threads. 0520207-4 refers to a grounding within the AWD system from what I found. The failure from the other electrical systems seemed to come from the rzr initiating limp mode. All of this seems to make sense.
I have a few ideas of where to start. Has anyone else experienced this code with the 4 in the corner?
I'll keep posted what I find.
-James

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post #2 of 9 Old August 18th, 2019, 08:21 PM
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Re: 0520207-4 check engine code

The - 4 is Driver Circuit Grounded. Need the manual?

Probably a wire chafed thru somewhere and grounding out. Chase the harness from the front diff.

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post #3 of 9 Old August 18th, 2019, 11:05 PM Thread Starter
 
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Re: 0520207-4 check engine code

Yeah, probably need the manual. I just checked out the turf mode relay and solenoid. Nothing noteworthy there.

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post #4 of 9 Old August 19th, 2019, 08:31 AM
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Re: 0520207-4 check engine code

See PM.

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SOLD!!! 2012 RZR 570, with most of the accessories.
Bought!!! 2015 RZR S900 Titanium! Let the fun begin (again)!!
XP1K wheels and tires. XB3 fire extinguisher, in cab. RAM-mounted Samsung Tab GPS. Larsonator DIY dual rate spring kit and Schmidty Racing resi end caps. Garage Products bushings. BugBuster mesh windscreen and rear mesh screen. Outerwears on R2C air filter and clutch intake. 3500# Winch, parking brake. Polaris DVR mirror & Drift Innovation action camera. PRP harnesses. Roof. DIY mud flaps. Tusk front bumper. UHMW A-arm guards. Hunterworks Gates Carbon belt.
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post #5 of 9 Old August 21st, 2019, 11:40 PM Thread Starter
 
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Re: 0520207-4 check engine code

Thanks @Denver for the PM. I ended up buying the pdf shop service manual and dug into research. Funny thing is that I think I found the answer in the 570 forum from years past. Not sure how many of you know about the second fuse block located under the crossbeam for the motor mount on the driver's side. There are three 30amp fuses located there (in a small sealed black box with a white sticker printed with three 30a fuse labels). Anyway, the middle fuse was blown. I'll replace that fuse tomorrow after work and also check my rear tail light wiring for melting. I had just replaced a lights fuse the day before my ride.
I'm posting a picture of this second fuse block (item 2)from the service manual. I'd take a picture, but lighting is horrible and not much space to arrange the phone to see it.
And here's the link to the forum posting.

https://www.rzrforums.net/rzr-570-sp...ts-no-awd.html

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post #6 of 9 Old August 22nd, 2019, 10:43 AM
 
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Re: 0520207-4 check engine code

Thanks for the info Katnapper, I will have to remember this.
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post #7 of 9 Old August 22nd, 2019, 07:58 PM Thread Starter
 
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Re: 0520207-4 check engine code

Adding information about this "power fuse box." This shows what each of those 30 amp fuses are wired in for.

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post #8 of 9 Old August 22nd, 2019, 10:26 PM Thread Starter
 
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Re: 0520207-4 check engine code

As I suspected, the tail light wire harness was melted to the muffler. I think that when I removed and sold my rear bumper that the wires had been held up by the bumper mounting bolts. Anyway, a new wire harness is $45, but I had wire, shrink tape and snake skin from my accessory fuse block project this past spring.
Before
After

After fixing the wiring issue, I put in a new 30 amp fuse in the "power fuse box" and a new fuse for the head lights. No check engine light and all of my accessories are on and happy again.
This issue can probably be listed as resolved.

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post #9 of 9 Old August 23rd, 2019, 05:57 AM
 
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Re: 0520207-4 check engine code RESOLVED

I had the same code earlier this year when after I washed my rzr and it shorted the tail light harness. Mine was routed over the frame between the box and frame. The reason it blew the main 30A fuse was because the previous owner installed a high amp fuse in the headlight circut when it had previously blown. So just a warning you should find the short rather than just putting in a higher amp fuse.

I found I jo longer needed to have my foot on the brake to start the engine after the main fuse blew.
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