2016 sportsman check engine light - Polaris ATV Forum
Polaris Sportsman 570 Discussions for the all new 2014+ Polaris Sportsman 570

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post #1 of 9 (permalink) Old 07-02-2019, 01:33 PM Thread Starter
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2016 sportsman check engine light

SPN code = 168
FMI code = 3

Runs rough at 1st start. Idles not so great. When I run it around the yard it seems to rev fine but if I let off the throttle and coast to a stop it dies. Anyone have any ideas? Does anyone know what that error code means?


The manual says this --- Voltage Above Normal, Or Shorted To High Source 168 3
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post #2 of 9 (permalink) Old 07-02-2019, 01:54 PM Thread Starter
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I just checked voltage on my battery. ATV off = 13.23v, idle at 3000 RMPs = 18.52v


I have had the wheeler act like this before after riding in lots of water or after a washing. I'm stumped.
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post #3 of 9 (permalink) Old 07-02-2019, 02:06 PM
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Probably a bad rec/reg, a loose terminal on the battery or a shorted stator - check the terminal tightness - if OK, make sure the battery has a full charge - unplug the rec/reg and check the continuity of the stator - if the stator has continuity leg to leg and is not shorted to ground, leave the stator unplugged from the rec/reg and run the machine with the lights off for about 15 minutes - if it runs fine with the rec/reg unplugged, get a new one (rec/reg that is - not a new quad) - if the stator has no continuity leg to leg on any one leg or is shorted to ground, get a new stator - either way good or bad stator, it should run right with the stator unplugged from the rec/reg as long as the battery has an adequate charge.
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post #4 of 9 (permalink) Old 07-02-2019, 02:21 PM Thread Starter
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Thanks. I'm hoping for a cheap solution here and with the way it's acted in the past after getting wet i'd bet it's a loose terminal or connection. I'll dig into this more tomorrow.

Thanks for the reply!
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post #5 of 9 (permalink) Old 07-02-2019, 04:02 PM
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Quote:
Originally Posted by justcallmejoe View Post
Thanks. I'm hoping for a cheap solution here and with the way it's acted in the past after getting wet i'd bet it's a loose terminal or connection. I'll dig into this more tomorrow.

Thanks for the reply!
Sounds like the VR to me. Do the testing latebird described and that will tell you where the problem is in a short few minutes. If its been doing this for a while in association with water exposure then you need to check/clean all connections and use dielectric grease while you're doing the other testing. It may be that intermittent water intrusion has now killed the VR.
Good luck and let us know what you find.
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post #6 of 9 (permalink) Old 07-02-2019, 04:03 PM
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Oh yeah, you can get a new VR on ebay for $45
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post #7 of 9 (permalink) Old 07-03-2019, 05:30 AM
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Ditto on the VR!!!! I've used RMStator and Rick's Motorsports Electric for my aftermarket non OEM electrical part needs.

2011 Sportsman® 800 EFI
GURU front brush guard
GURU rear brush guard
Polaris front lock n ride cargo box
Polaris rear rack extender
Warn RT 3.0 winch w/amsteel synthetic line
Viper aluminum haus fairlead
Polaris front spring adjusters
Ricochet a-arm guards
Ricochet full frame skid plate
ITP T-7 beadlock 14" w/OMF inner rim guards
Maxxis big horn 2.0 26x9 front
Maxxis big horn 2.0 26x11 rear
QSC clutch kit
EPI HD springs front n rear
ODI rogue 130mm grips
Ultraseal commercial grade tire sealant (front)
Highlifter tire sealant (rear)
CTEK 3300 battery maintainer
added 7 zerks
beefed up wiring harness
OGIO rear bag
ROTOPAX 1gal. + 2gal. gasoline can
Jccapri bushing kit
Kolpin Over Fenders
Rigid Industries E-Series 10" flood
Walker Evans struts
NGK Iridium's (2,500 miles on Champion's and they looked great!)
Odyssey Extreme battery PC545

2018 Sportsman® 570-T
2019 Aluma® A8818
2020 Outlander® 1000R XXC (on order, ETA mid-Sept)
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post #8 of 9 (permalink) Old 07-05-2019, 04:14 AM Thread Starter
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So testing was fine. I truly think this was a loose connection/water issue. I took all the plastics off the wheeler and hit every single electric connection I could find with a soft wire brush then added dielectric grease. Prior to doing this I was still getting the check engine light on 1st start. After going through the connections the check light was gone.


It's amazing how much dirt was under those plastics lol. I need to buy some extra plastic push ins and start removing plastics and clean everything every other time I ride.


Thanks for the pointers guys.
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post #9 of 9 (permalink) Old 07-05-2019, 05:25 AM
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What kinda voltage you getting now at 3000 rpm?
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