2022 Polaris Sportsman 570 Diagnostic Codes: A Diyer’S Guide

There’s nothing quite like the feeling of hitting the trail on your 2022 Polaris Sportsman 570. But there’s also nothing that sinks your stomach faster than seeing that little check engine light (CEL) blink to life, miles from the trailhead.

You might think it’s a ride-ending disaster. But what if I told you that light isn’t just a warning? It’s your ATV trying to talk to you, giving you clues to exactly what’s wrong. Understanding these messages is the key to becoming a more confident and self-reliant owner.

This guide is your translator. We’re going to break down everything you need to know about the 2022 polaris sportsman 570 diagnostic codes. We’ll show you how to access them without any special tools, what the most common codes mean, and a step-by-step process to diagnose and fix the issue, so you can spend less time worrying and more time riding.

Why Understanding Your ATV’s Diagnostic Codes is a Game-Changer

Ignoring that check engine light is like ignoring a strange noise in your engine—it rarely ends well. Learning to read your machine’s diagnostic codes is one of the most empowering skills you can develop as an owner. It’s not just about fixing a problem; it’s about understanding your machine on a deeper level.

Here are the core benefits of 2022 polaris sportsman 570 diagnostic codes literacy:

Save Money and Time: A simple code could point to a loose gas cap or a faulty sensor that costs $30 and takes 15 minutes to replace. A trip to the dealer could cost you hundreds in diagnostic fees and leave you without your ride for days.
Prevent Catastrophic Failures: A code for a coolant temperature sensor might seem minor, but ignoring it could lead to severe engine overheating and a complete rebuild. Catching issues early is the cornerstone of a sustainable ownership experience.
Informed Conversations with Mechanics: If you do need professional help, walking in and saying, “I have an SPN 110, FMI 4 code indicating a coolant sensor voltage issue,” is much more effective than saying, “The engine light is on.” You’ll get faster, more accurate service.
Build DIY Confidence: Successfully diagnosing and fixing an issue on your own is incredibly rewarding. It turns you from a simple rider into a true hands-on enthusiast who knows their machine inside and out. Following these best practices will make your Sportsman last for years.

How to Access 2022 Polaris Sportsman 570 Diagnostic Codes

Fortunately, Polaris made it surprisingly easy to check for trouble codes right from the rider’s seat. You don’t need a fancy scanner for the basics, just your ignition key and your gauge cluster. This is the first step in our how to 2022 polaris sportsman 570 diagnostic codes guide.

The “Key On/Off” Method for Built-In Diagnostics

Your Sportsman has a built-in diagnostic mode. It’s simple to access and should be your first go-to when the check engine light appears.

Find a Safe Spot: Park your ATV on level ground and put it in Park. Ensure the engine is off.
The Magic Sequence: Turn the ignition key to the ON position (don’t start the engine), then quickly turn it OFF. Repeat this sequence three times, ending with the key in the ON position (ON-OFF, ON-OFF, ON).
Wait and Watch: The digital display on your gauge cluster will begin to cycle. If there are any active fault codes, they will appear on the screen. If there are no codes, it will typically display “END” or cycle back to the normal display.

Reading the Codes on Your Display

The codes displayed aren’t simple words; they are presented in a specific format called J1939 codes. You’ll see two sets of numbers:

SPN (Suspect Parameter Number): This tells you what system or component is having a problem (e.g., throttle position sensor, fuel injector, etc.).
FMI (Failure Mode Identifier): This tells you how the component is failing (e.g., voltage too high, data incorrect, short circuit).

For example, you might see SPN 520194, FMI 17. You need both numbers to accurately diagnose the issue. Always write down the full code exactly as it appears.

Decoding the Common Problems with 2022 Polaris Sportsman 570 Diagnostic Codes

While there are hundreds of potential codes, a handful pop up more frequently than others. Here’s a quick rundown of some common issues you might encounter. This is not an exhaustive list, but it covers the usual suspects.

Fuel System Faults (e.g., SPN 94, 157)

These codes often point to issues with fuel delivery. An SPN 94, for instance, relates to fuel pressure. This could be caused by a clogged fuel filter, a weak fuel pump, or even just a kinked fuel line.

What to Check: Start with the simple things. Is your fuel filter dirty? Check the fuel lines for any visible damage or kinks. A failing fuel pump is also a common culprit on machines with higher hours.

Throttle & Pedal Position Sensor (TPS/APPS) Errors (e.g., SPN 51, 91)

The Throttle Position Sensor (TPS) tells the machine’s computer (ECU) how much you’re pressing the throttle. If this sensor fails or sends bad data, you can experience rough idling, poor acceleration, or limp mode. This is one of the most common problems with 2022 polaris sportsman 570 diagnostic codes.

What to Check: Inspect the wiring harness going to the throttle body. Look for any frayed wires or loose connections. Sometimes, moisture can get into the connector, which can be fixed with a bit of dielectric grease after cleaning.

Engine Temperature Faults (e.g., SPN 110, 111)

An SPN 110 code points to a problem with the Engine Coolant Temperature (ECT) sensor. This is a critical code to address immediately. The ECU needs an accurate temperature reading to manage fuel mixture and the cooling fan.

What to Check: First, ensure your coolant level is correct. A low coolant level can cause the sensor to read incorrectly. If the coolant is full, inspect the sensor’s wiring. If the fan isn’t kicking on when it should, this sensor is a likely cause.

Misfire Detection (e.g., SPN 651-654)

A misfire code means one of the engine’s cylinders isn’t firing correctly. This can feel like a stutter or hesitation during acceleration. The specific SPN number (651 for cylinder 1, etc.) tells you which cylinder is the problem.

What to Check: The most common cause of a misfire is a worn-out or fouled spark plug. Start there. If a new plug doesn’t fix it, inspect the spark plug wire and ignition coil for that cylinder.

Your Step-by-Step Diagnostic Codes Guide: From Code to Fix

Okay, you’ve pulled the code. Now what? Don’t just start throwing parts at it. Follow a logical process to find the root cause. Here are some 2022 polaris sportsman 570 diagnostic codes tips to guide you.

Step 1: Document and Research: Write down the full SPN and FMI numbers. Use your owner’s manual or a quick search on an enthusiast forum like PolarisRiders.com to find the specific definition of that code.
Step 2: Perform a Thorough Visual Inspection: Before you grab any tools, use your eyes. Look around the component mentioned in the code. Are there any chewed wires, loose connectors, or leaking fluids? Many problems are found this way.
Step 3: Check the Basics: Is your battery fully charged and are the terminals clean and tight? A weak battery can cause a host of strange electrical gremlins and false codes. Check your fluid levels—oil and coolant.
Step 4: Address the Likely Culprit: Based on your research, start with the most common and easiest fix. If you have a misfire code, change the spark plug. If you have a sensor code, clean the electrical connector first.
Step 5: Clear the Code and Test: After performing a repair, you need to clear the code. Often, fixing the underlying issue and cycling the key a few times will do it. Otherwise, disconnecting the battery for 15 minutes will reset the ECU. Take a short, safe test ride to see if the code returns.
Step 6: Know When to Call a Pro: If you’re dealing with complex internal engine codes, fuel pump replacement, or anything that feels beyond your skill level, there’s no shame in taking it to a trusted mechanic. Being a good DIYer also means knowing your limits.

Best Practices and a Sustainable Care Guide for Your Sportsman 570

The best way to deal with diagnostic codes is to prevent them from happening in the first place. A proactive approach is the most sustainable 2022 polaris sportsman 570 diagnostic codes strategy, saving you parts, money, and headaches.

This 2022 polaris sportsman 570 diagnostic codes care guide is all about preventative maintenance:

Regular Fluid Checks: Before every ride, check your engine oil and coolant. Low fluid levels are a primary cause of major mechanical failures.
Keep it Clean: A clean machine is easier to inspect. Washing your ATV after a muddy ride lets you spot potential issues like a torn CV boot or a leaking gasket before they become serious problems.
Battery Health is Key: Use a battery tender, especially during long periods of storage. A healthy battery is crucial for the complex electronics on modern ATVs.
Air Filter Maintenance: A clogged air filter chokes your engine, affecting performance and fuel mixture, which can eventually trigger a fault code. Clean or replace it per your service manual’s recommendations.
Eco-Friendly Practices: When you perform maintenance, dispose of used oil, coolant, and other fluids responsibly at a local auto parts store or recycling center. This protects the trails we all love to ride.

Frequently Asked Questions About 2022 Polaris Sportsman 570 Diagnostic Codes

How do I clear a diagnostic code on my Sportsman 570?

Once you’ve fixed the underlying problem, the code will often clear itself after a few engine start/stop cycles. For a manual reset, you can disconnect the negative battery terminal for about 15 minutes. This will reset the ECU. However, only do this after you’ve fixed the issue, as clearing the code erases valuable diagnostic data.

Can I still ride my ATV with a check engine light on?

It depends. If the light is steady and the machine seems to be running normally, you can likely ride it carefully back to your truck or home. If the light is flashing or the machine is running poorly, sputtering, or overheating, you should stop immediately to prevent catastrophic engine damage.

Do I need a special tool to read the codes?

No, you can use the built-in “key on/off” method to read the basic SPN/FMI codes. However, for more advanced diagnostics, a dedicated OBD-II scanner with a Polaris 8-pin adapter can provide more detailed, real-time data, which is extremely helpful for tricky issues.

What’s the difference between an SPN and an FMI number?

Think of it this way: The SPN (Suspect Parameter Number) is the noun—it tells you what part has a problem (e.g., “Engine Coolant Temperature Sensor”). The FMI (Failure Mode Identifier) is the verb—it tells you how it’s failing (e.g., “Voltage Above Normal” or “Data Erratic”). You need both to get the full story.

Tackling your ATV’s diagnostic codes is a skill that pays for itself over and over. It transforms you from a passive owner into an active, knowledgeable rider who is in tune with their machine. So next time that light comes on, don’t panic. Grab your notes, follow these steps, and get ready to wrench. Stay safe out there and happy riding!

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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.