At high altitude polaris runs rough and lopes

The 20 Amp fuse (diagram shows only one 20A) feeds ignition coil and fuel pump circuits. With a current probe measure the two circuits separately to identify which is most probable cause.

Check battery voltage with engine running. It should be well over 13 VDC.

If it will run for a few minutes, you might get by with a touch test of the ignition coil and fuel pump. If one is markedly hot, the heat likely identifies the culprit. But a current probe is the tool necessary if you want to avoid part$ swapping.

Recommend fuel pressure check also. Eccessively high pressure could be problematic and low pressure would further implicate fuel pump.

fuel ? clogged ? spark plug fouling ? bad fuel in tank ? remove gas cap and lightly smell the fumes from gas tank it will smell sour or stale if bad. has foul odor. drain old gas add new clean fuel.fuel additive good investment if not run everyday.good luck

is the idle too high?

Check got a air leak between carb. And eng. that will make it run lean and high idle

possible worn out shift forks.

it should run rough any more then an idle the code is throttle safety signal voltage to high.a dealer should be able to flash the chip and as far as driving it whats it run like

fast idle start usually indicates an air leak somewhere.check carburettor bolts are tight and engine head bolts are tight.try that first

http://www.marclatulippe.com/ManuelShopMotoneige/Polaris/2010-2012%20Polaris.pdf

fuel issue. what year is it ?

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have seen this happen to my honda, water gets ingested in the carb when in deep water and settles in the bottom of the fuel bowl. you must remove the fuel bowl drain cap to drain out water