Polaris 570 Error Code List: Your Ultimate Guide To Diagnosing

There’s nothing like that sinking feeling. You’re deep on the trail, the engine sputters, and a cryptic number flashes on your Polaris 570’s dash. Your ride just went from thrilling to troubleshooting. We’ve all been there, staring at a code that might as well be a foreign language.

I promise you, by the end of this guide, those confusing numbers will become your roadmap to a quick fix. We’re going to turn that check engine light from a symbol of frustration into a helpful diagnostic tool you can understand and act on.

This is your complete polaris 570 error code list and troubleshooting guide. We’ll break down how to read the codes, what the most common ones mean, the tools you’ll need, and the step-by-step checks you can perform to get your machine running right. Let’s get you back on the trail.

What Are Polaris Error Codes and Why Do They Matter?

Think of your Polaris 570’s Engine Control Unit (ECU) as its brain. It’s constantly monitoring dozens of sensors—from engine temperature to throttle position—to keep everything running smoothly. When a sensor reports a reading that’s outside of its normal range, the ECU flags it.

This flag does two things: it usually turns on the Malfunction Indicator Lamp (MIL), which you know as the check engine light, and it stores a Diagnostic Trouble Code (DTC) in its memory. This code is your starting point for any diagnosis.

Understanding the benefits of a polaris 570 error code list is the first step to becoming a more self-sufficient owner. Instead of guessing what’s wrong or immediately hauling it to a dealer, you can pinpoint the problem area, saving you massive amounts of time, money, and frustration.

How to Access and Clear Error Codes on Your Polaris 570

Before you can use a code list, you need to know how to pull the codes from your machine. Luckily, Polaris makes this pretty straightforward, and you don’t need a special scanner. Here’s how to do it.

Step-by-Step Guide to Retrieving Codes

Turn the Key On: Put the key in the ignition and turn it to the ‘ON’ position, but do not start the engine.
Wait for the System Check: Let the instrument cluster cycle through its startup check. You’ll see the gauges sweep and the lights flash.
Use the Mode/Toggle Button: On your gauge cluster or handlebar controls, press and release the ‘Mode’ or ‘Override’ button to cycle through the display options (like odometer, trip meter, engine hours).
Find the Check Engine Screen: Keep cycling until you see the check engine light symbol appear on the screen. If there are active codes, they will be displayed here.
Read the Code: The screen will show the code, which is typically made up of two numbers: the SPN and the FMI (we’ll explain those next). Write down every code you see. If there’s more than one, the display will cycle through them.

A Quick Note on Clearing Codes

Once you’ve fixed the underlying issue, the code may clear itself after a few successful ride cycles. However, you can also clear it by disconnecting the battery’s negative terminal for about 60 seconds.

Important: Never clear a code without first diagnosing and fixing the problem. Clearing the code just turns off the light; it doesn’t solve the mechanical or electrical issue that caused it.

The Complete Polaris 570 Error Code List: SPN/FMI Explained

When you see a code, it’s usually presented in two parts: an SPN and an FMI. Understanding this structure is key to using this polaris 570 error code list guide effectively.

SPN (Suspect Parameter Number): This tells you which system or component is having a problem. For example, an SPN might point to the throttle position sensor or a fuel injector.
FMI (Failure Mode Identifier): This tells you what kind of problem the component is having. Common examples include “Voltage Above Normal,” “Data Erratic,” or “Condition Exists.”

Below are some of the most common codes you’ll encounter. We’ve grouped them by system to help you narrow down your search.

Critical Engine & Fuel System Codes

SPN 102, FMI 3, 4 – Manifold Absolute Pressure (MAP) Sensor: FMI 3 means voltage is too high; FMI 4 means it’s too low. This sensor measures engine load. A fault here can cause poor performance, stalling, and a rich/lean running condition. Check the wiring and sensor connection first.
SPN 651, FMI 3, 4, 5 – Cylinder 1 Injector Circuit: This points to an issue with the fuel injector or its wiring. FMI 3 (voltage high), FMI 4 (voltage low), or FMI 5 (current low/open circuit) are common. The engine will likely run rough or misfire.
SPN 520207, FMI 3, 4 – Throttle Pedal Sensor (TPS on Throttle Body): Your ECU isn’t getting a clear signal of how much you’re pressing the gas. This can cause the machine to go into “limp mode,” where power is severely restricted for safety.
SPN 94, FMI 3, 4 – Fuel Pressure Sensor: Indicates an issue with fuel delivery. Could be a failing fuel pump, a clogged filter, or a bad sensor.

Sensor & Electrical System Codes

SPN 110, FMI 3, 4 – Engine Coolant Temperature (ECT) Sensor: A critical sensor that tells the ECU when to turn on the cooling fan. If this fails, your machine can overheat quickly. FMI 3 (high voltage) or FMI 4 (low voltage) usually means a wiring or sensor issue.
SPN 168, FMI 3, 4 – System Voltage: This is a big one. FMI 3 means the voltage is too high (over 16V), often pointing to a faulty voltage regulator. FMI 4 means voltage is too low (under 9V), which could be a bad battery, loose terminals, or a failing stator.
SPN 22, FMI 3, 4 – Throttle Position Sensor (TPS): Similar to the throttle pedal sensor, this one is on the engine’s throttle body. A fault here leads to erratic idling and poor throttle response.
SPN 727, FMI 2, 3, 4 – Crankshaft Position Sensor: The engine will not run without a signal from this sensor. It tells the ECU the engine’s speed and position. If this code appears, check the sensor’s wiring harness for damage from debris or heat.

Power Steering (EPS) & Drivetrain Codes

SPN 520230, FMI 31 – EPS No Message Received: The power steering control module isn’t communicating with the ECU. This is often a wiring or connection issue.
SPN 520224, FMI 4 – AWD Control Circuit Voltage Low: You might notice your All-Wheel Drive isn’t engaging. Check the wiring going to the front differential coil.

Common Polaris 570 Problems and Their Associated Codes

Sometimes it’s easier to work backward from the symptom. Here are a few common problems with the polaris 570 error code list and the codes that often accompany them.

Symptom: Engine is Misfiring or Running Rough

If your 570 feels like it’s sputtering or losing power, look for codes related to fuel and spark.

Primary Suspects: SPN 651 (Injector Circuit), SPN 102 (MAP Sensor), SPN 22 (TPS).
What to Check: Inspect the spark plug and wire. Check the fuel injector wiring for any signs of rubbing or damage. Ensure the MAP sensor is plugged in securely and its vacuum line is intact.

Symptom: Overheating or Cooling Fan Not Working

The temperature light is on, and you don’t hear the fan kicking on. This is a critical issue that needs immediate attention.

Primary Suspects: SPN 110 (ECT Sensor), SPN 520209 (Fan Relay Circuit).
What to Check: First, ensure your radiator is clean and free of mud. Check the coolant level. Inspect the wiring to the ECT sensor (often near the thermostat housing) and the fan motor itself. You can often test the fan by applying 12V directly to it.

Symptom: No Power or Stuck in “Limp Mode”

The machine starts but has almost no throttle response. This is a safety feature to prevent further damage.

Primary Suspects: SPN 520207 (Throttle Pedal Sensor), SPN 22 (TPS on throttle body).
What to Check: This is almost always a “drive-by-wire” system fault. Carefully inspect the entire wiring harness between the gas pedal and the engine. Look for pinched or broken wires, especially where the harness bends or passes through the frame.

Your DIY Toolkit: Essential Gear for Troubleshooting

Having the right tools makes diagnosis much easier. You don’t need a full professional shop, but these items are invaluable for tackling most error codes.

Digital Multimeter: This is non-negotiable. You’ll need it to check voltage, resistance (ohms), and continuity in sensors and wiring.
Basic Socket & Wrench Set: For removing plastics and components.
Torx & Allen Key Set: Polaris uses these fasteners everywhere.
Dielectric Grease: Apply this to electrical connectors after cleaning them to prevent moisture and corrosion.
Contact Cleaner: Perfect for cleaning dirty sensor connections without leaving a residue.
A Service Manual: The ultimate polaris 570 error code list guide. It provides detailed wiring diagrams and diagnostic procedures for every single code.

Best Practices for Maintaining Your Polaris 570 to Avoid Codes

The best way to deal with error codes is to prevent them from happening in the first place. Following a good polaris 570 error code list care guide is all about proactive maintenance.

Adopting sustainable ownership practices not only keeps your machine reliable but is also an eco-friendly approach. A well-maintained engine runs more efficiently, uses less fuel, and produces fewer emissions. It also reduces waste from prematurely failed parts.

Keep it Clean: Mud and water are enemies of electrical systems. Regularly wash your machine, paying special attention to clearing debris from around the engine and wiring harnesses.
Check Your Battery: A weak or failing battery is the number one cause of random, nonsensical error codes. Ensure your terminals are clean, tight, and free of corrosion.
Inspect Wiring Regularly: After every few rides, do a quick visual check of the main wiring harnesses. Look for spots where wires might be rubbing against the frame or engine. Secure any loose wires with zip ties.
Use Dielectric Grease: Whenever you have an electrical connector apart, add a small dab of dielectric grease. This is one of the best preventative measures you can take.

Frequently Asked Questions About Polaris 570 Error Codes

Can I still ride my Polaris 570 with the check engine light on?

It’s highly discouraged. While some codes are minor, others can indicate a serious problem that could cause catastrophic engine damage if ignored (like an overheating issue). The best practice is to stop, pull the code, and assess the situation before continuing.

Why did the error code come back after I cleared it?

This means the underlying problem was not fixed. Clearing a code only erases the message from the ECU’s memory. If the sensor is still reading a fault, the ECU will immediately log the code again as soon as the key is turned on or the engine is started.

What does “limp mode” mean on a Polaris?

Limp mode, or limp-home mode, is a safety feature that drastically reduces engine power when the ECU detects a critical fault, typically with the throttle control system. It allows you to “limp” the machine back to the truck or camp at a very low speed without risking uncontrolled acceleration.

Can a weak battery really cause random error codes?

Absolutely. Modern UTVs are packed with sensitive electronics. When system voltage drops too low during startup, it can cause sensors to send faulty readings to the ECU, triggering a cascade of seemingly unrelated error codes. If you have multiple strange codes, always test your battery first.

You’ve now got the knowledge and a solid plan of attack. That flashing light on your dash is no longer a mystery; it’s a clue. By approaching it systematically—read the code, understand the system, inspect the components, and make a careful repair—you can solve most issues yourself.

Grab your tools, use this guide with confidence, and get back to what really matters. Stay safe and have fun out there on the trail!

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Thomas Corle

Founder & Automobile expert at FatBoysOffroad

Automobile expert and off-road enthusiast, sharing in-depth knowledge of vehicles, gear, and adventures. Helping readers make smart decisions and enjoy the thrill of off-roading safely and confidently.