Polaris Ranger 570 only runs 15 MPH after washing it. Other wise it runs fine. I was fine until I washed it. Was careful not to spray in air filter box or on any electronics?

Could be fuel, fuel pressure, poor compression, spark, or air induction or other electronic engine controls.

Was it running fine and then not or has it progressed over time?Did it sit over winter and now has issues? Has regular maintenance been done, including scheduled valve adjustment?

Spray some starting fluid in the intake to confirm what you believe. It should hit with the spray.

hey Lou Ann,,, check all your fuses... leave it in the sun for a day... to dry out... do this, then reply on here.

are you using the correct key --possible need tune up --check fuel filter air filter plug and wires and possible carb / rebuild

I had same problem. Turned out to be temp sensor putting bike into limp mode then quitting. Never seen that code though as my ranger only shows codes from 21-61

The Machine is new, do you have a warranty? Has the machine been sitting for a while? If so, a professional carb/fuel system cleaning and a new spark plug should take care of it.

I WOULD take it o the dealer and find out what the code means!!

clean and set carb..replace air filter

if its a black smoke its running rich. check your air filter and air tube for clogs. something may have made a nest in there.

Sounds like the carb,has it been check after its test and tune ?

sounds like its running rich. check your float height and then lower your main jet needle a notch