What Does the 520 207 Polaris Code Mean?[Solution Included]

Whenever your Polaris ATV faces any problem, the check engine light pops up on the monitor. When your go to the check engine mode, you can see some codes. These codes indicate different issues.

So, what does 520 207 Polaris code mean? 

Polaris code 520 207 indicates problems regarding the AWD control circuit. This sign can appear for various reasons, including a blown fuse, faulty AWD switch, faulty voltage regulator, or damaged relays. You have to check these elements one by one and replace them if they are found faulty. 

This article will help you through the process of solving the Polaris check engine 520 207 code issue. So, keep reading. 

What Does Polaris Engine Code 520 207 Mean?

520 207 Polaris code mean

Polaris code engine 520 207 indicates issues with the AWD control circuit. When there are any circuit-related issues, your ATV monitor shows this code.

Under code 520 207, some subcodes indicate more particular problems. The following tables will demonstrate that. 

5202075Driver Circuit Open / Grounded
3Driver Circuit Short to B+
4Driver Circuit Grounded

Driver Circuit Short to B+

Polaris code 520207 3 indicates Driver Circuit Short to B+. It means the input circuit in the control module sees battery voltage on the input pin. A bad sensor, blown fuse, or faulty wiring can be the reason behind it. 

Driver Circuit Grounded/Open

This means there is high resistance in the path, and a large amount of electricity cannot flow properly. The Polaris code 520207 4 or 520207 5 shows use or wiring can’t flow enough electricity to the engine.

Whatever the FMI code is, Polaris engine code 520 207 indicates some common problems described in the next segment. 

520 207 Polaris Code: Reasons And Solutions

You have to do the Polaris error code 520 207 troubleshooting on an elimination basis. Test various things, including the fuse, AWD switch, and relay, one by one and check whether they are functioning correctly or not. 

Reason 1: Blown Fuse

The first thing you need to check is if the fuse is okay or not. A blown fuse is the most common reason for the driver circuit being grounded. 


Depending on your ATV model, the fuse box should be under the driver seat or dash, on the throttle panel, or above the dash. Your manual will have the location of the fuse box.

You have to check with a multimeter whether the fuse is blown or not. Here’s how you have to do it. 

  1. Remove the fuse for testing.
  2. Set the multimeter in resistance mode. 
  3. Touch one pin of the multimeter with any one probe of the fuse and touch another pin of the multimeter with the other probe. 
  4. If you hear a “beep,” that means the fuse is functioning. If you don’t hear a beep and the resistance in the multimeters read very high, for instance, 3-4 megaohms, that means the fuse is blown. 
  5. Take a new fuse and plug it into your ATV. 

Blown Fuse Checking

Source: Classic Cars Today Online

Now, start your ATV, and the check engine code 520 207 should be gone. However, if the fuse was functioning and the code didn’t go away, continue checking the next items. 

Reason 2: The AWD Switch

If your fuse is appropriately functioning, next you should check the AWD switch. Sometimes, the AWD switch can be broken, corroded, or disconnected. This faulty AWD switch can’t supply equal power to all the differentials. 

AWD Switch

Source: eBay


Open the AWD switch and check for potential issues. Consider the following steps.

  1. There should be two visible screws in the AWD switch. Remove those with the help of a screwdriver. 
  2. Check if the switch wires are not damaged and are connected properly. If these are damaged, or any part of the switch is broken, you need to replace the AWD switch. 
  3. If there is corrosion or debris, clean them properly. Make sure nothing is stuck inside the switch box. 
  4. After you are done cleaning and connecting the wires, reassemble the switch cover. 

The 520 207 code should be gone if the AWD switch was the problem. 

Reason 3: Faulty Voltage Regulator

Faulty voltage regulators can cause the circuit to ground. The primary function of the voltage regulator is to convert the right amount of energy from the stator to the battery. A faulty regulator causes excess power to flow to the battery. 


Test the voltage regulator with the multimeter to check if it’s faulty.

  1. The first thing you have to do is turn your ATV off. 
  2. Set your multimeter in diode-checking mode. 
  3. Remove the regulator from the ATV.
  4. Attach the negative pin from the multimeter with the positive wire of the regulator, which is red. Attach the multimeter’s positive pin with the voltage regulator’s black-colored wire. 
  5. Check the screen of your multimeter. The voltage regulator is functioning if it reads between .300 to .500 volts. 
  6. If you notice a sign “OL” that is an open line in the multimeter, that means the voltage regulator is faulty. Replace the faulty voltage regulator. And the check engineering sign should be gone. 

Reason 4: Faulty Relays

The relay is an electromagnetic switch that controls the electricity flow regarding when it should or should not pass. When the relay is faulty, unregulated power can pass to the engine. As a result, the 520 207 Polaris code shows up. 


You will find your ATV relay in the fuse box. After shutting down the vehicle, take it out and check the relay with a multimeter. Replacing the relay should solve your check engine code problem.

Read More-

  1. 4 Easy Solutions for Polaris Code 520 344
  2. Causes and Solutions of P229F Code 6.7 Cummins


What happens if you don’t have a starter relay?

If you don’t have a starter relay, an uncontrollable amount of electricity will pass through the starter motor and burn. The starter relay controls the electric flow once you start the AWD switch. 

How does Polaris On-Demand AWD Work?

The on-demand AWD in Polaris engages and disengages automatically when in need. When the road is slippery, and the rear tires lose traction, the on-demand AWD engages automatically. 

What will a bad voltage regulator do?

A faulty voltage regulator will cause your ATV to overcharge or undercharge. It will not be able to produce the right amount of electricity from the stator to the battery. 


These are the reasons behind the 520 207 Polaris code. I hope this article will be enough to solve this problem. Keep all the wiring and switches of your ATV in check to avoid this type of grounding problem.

Now, it’s time for me to say goodbye. Have a great day, and best of luck with your ATV.


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