List Of Fault Codes 2019 Polaris General

There’s nothing that kills the thrill of a trail ride faster than that dreaded check engine light flashing on your 2019 Polaris General’s dash. Your mind starts racing: Is it serious? Is my day over? How much is this going to cost?

We’ve all been there. That sudden warning can turn a day of adventure into a day of anxiety. But what if you had the power to understand exactly what your machine is trying to tell you?

This is your complete guide to decoding those cryptic messages. We promise to transform you from a worried rider into a confident troubleshooter. We’ll walk you through exactly how to access the diagnostic menu, provide a comprehensive list of fault codes 2019 polaris general owners will encounter, and give you actionable steps to diagnose and fix the most common problems right in your garage.

How to Access the Fault Codes on Your 2019 Polaris General

Before you can fix the problem, you need to know what it is. Thankfully, Polaris built a powerful diagnostic tool right into your instrument cluster. You don’t need any fancy scanners for this first step. This is the essential starting point for any how to list of fault codes 2019 polaris general guide.

Follow these simple steps to read your active codes:

Turn the ignition key to the ON position, but do not start the engine.
Using the MODE button on your dash (or toggle switch on the left side of the steering wheel), cycle through the display options until you reach the options screen (it looks like a little gear icon).
Press and hold the MODE button to enter the options menu.
Use the MODE button to scroll down to “Diagnostics” or “Diag Codes.”
Press and hold the MODE button to select it. The cluster will now display any active fault codes.
If you have multiple codes, it will cycle through them. Make sure to write down every number you see. You will typically see a set of two or three numbers: the main code, the SPN, and the FMI.

Having this information is the first and most critical step. Don’t just rely on memory—grab your phone and take a picture or jot them down in a notebook.

Understanding the Code Structure: What Are SPN and FMI?

When you pull the codes, you’ll see more than just one number. You’ll typically see an SPN and an FMI. Understanding what these mean is a huge benefit and will make your troubleshooting much more effective.

Think of it like a doctor’s diagnosis: you don’t just want to know you’re sick, you want to know what’s wrong and why.

SPN (Suspect Parameter Number): This tells you what component or system is having a problem. For example, an SPN might point to the oxygen sensor, the throttle position sensor, or the engine coolant temperature sensor. It’s the “subject” of the fault.
FMI (Failure Mode Identifier): This tells you how the component has failed. It provides crucial context. For example, is the sensor’s voltage too high? Too low? Is the data erratic or incorrect? This is the “verb” of the fault, describing the specific issue.

Together, the SPN and FMI give you a precise diagnostic starting point. An SPN for the O2 sensor combined with an FMI for “Voltage Below Normal” points you directly toward a potential wiring short or a failed sensor, which is much more helpful than a generic “O2 Sensor Problem” code.

The Complete List of Fault Codes 2019 Polaris General Owners Must Know

Here it is—the breakdown you’ve been looking for. While there are hundreds of potential codes, this list covers the most common problems you’re likely to face on your 2019 General. We’ve organized them by system to help you quickly find what you’re looking for. This is your go-to list of fault codes 2019 polaris general guide for trailside triage.

Critical Engine Fault Codes

These codes relate directly to engine performance and health. Pay close attention to these, as some can indicate serious issues.

SPN 651-654, FMI 2, 3, 4, 5: Engine Misfire Detected. The number (651 for cylinder 1, 652 for cylinder 2, etc.) tells you which cylinder is misfiring. This is one of the most common problems.
- Common Causes: Fouled or bad spark plug, faulty ignition coil or wire, clogged fuel injector, low fuel pressure.
- What to Do: Start by inspecting the spark plug for the corresponding cylinder. If it looks worn or oily, replace it with a new NGK MR7F plug. Check that the spark plug wire is seated firmly on the coil and the plug.
SPN 520209, FMI 3, 4, 5: Oxygen (O2) Sensor Fault. This sensor measures the air-fuel ratio. A fault here can cause poor fuel economy and rough running.
- Common Causes: A failed O2 sensor, damaged wiring, or an exhaust leak before the sensor.
- What to Do: Inspect the wiring harness leading to the sensor (located on the exhaust header) for any burns or breaks. Ensure it’s plugged in tightly. If the wiring is good, the sensor itself has likely failed.
SPN 94, FMI 3, 4: Low Fuel Pressure. The engine isn’t getting enough fuel.
- Common Causes: Clogged fuel filter, failing fuel pump, kinked fuel line.
- What to Do: The first and easiest thing to check is your fuel filter. If it hasn’t been changed recently, start there. If the problem persists, you may need to test the fuel pressure to see if the pump is weak.
SPN 100, FMI 1, 18: Low Oil Pressure. STOP THE ENGINE IMMEDIATELY. This is a critical warning.
- Common Causes: Low engine oil level, failed oil pressure sensor, or in a worst-case scenario, a failing oil pump.
- What to Do: Do not run the engine. Check your oil level first. If it’s low, top it off and check for leaks. If the oil level is correct, the issue is likely a bad sensor or a more severe internal problem that requires a professional mechanic.
SPN 110, FMI 3, 4: Engine Coolant Temp Sensor High/Low Voltage. Your engine’s computer isn’t getting a reliable temperature reading.
- Common Causes: Bad sensor, damaged wiring, or a poor connection at the plug.
- What to Do: Check the sensor’s wiring harness near the thermostat housing for damage. Unplug it, check for corrosion, add a dab of dielectric grease, and plug it back in.

Drivetrain, Steering, and AWD Codes

These codes relate to your power steering, 4×4 system, and transmission sensors.

SPN 520230 & 520231, FMI 31: Power Steering (EPS) Fault. You may experience a loss of power steering.
- Common Causes: Low battery voltage is the number one cause. It can also be a bad connection at the EPS unit or a failing unit.
- What to Do: First, fully charge and test your battery. The EPS system draws a lot of power and is very sensitive to low voltage. Check the main power connections to the EPS unit under the dash for tightness.
SPN 727, FMI 2, 7: Gear Position Sensor Fault. The dash may not display the correct gear, or the machine may have trouble starting.
- Common Causes: Sensor is out of adjustment, wiring is damaged, or the sensor itself has failed.
- What to Do: Inspect the wiring. Sometimes a simple adjustment can fix this, but it often requires replacing the sensor.

Pro Troubleshooting Tips: Beyond Just Reading the Codes

Reading the code is just the beginning. A good mechanic knows the code points you in a direction, but it doesn’t always pinpoint the exact failed part. Here are some list of fault codes 2019 polaris general tips from the pros.

Start with the Basics: Before you order a single part, check the simple stuff. Is your battery fully charged and are the terminals clean and tight? A weak battery can cause a cascade of phantom electrical codes. Check your fuses in the fuse box under the hood.

The “Wiggle Test”: This is a classic old-school trick. With the machine running, gently wiggle the wiring harness and connector related to the fault code. If the engine stumbles or the light flickers, you’ve likely found a loose connection or a broken wire inside the insulation. This is especially effective for finding intermittent common problems with list of fault codes 2019 polaris general.

Invest in a Multimeter: A basic digital multimeter is one of the best tools a DIYer can own. It allows you to test for voltage, continuity, and resistance, helping you confirm if a sensor is truly bad or if you just have a wiring problem.

When to Clear the Code: After performing a repair, like replacing a sensor or fixing a wire, the code may not go away immediately. Sometimes it takes a few key-on/key-off cycles for the computer to recognize the fix. You can also perform a hard reset by disconnecting the battery for 10 minutes, but be aware this will clear all codes.

Best Practices for Prevention: Your Polaris General Care Guide

The best way to deal with fault codes is to prevent them from happening in the first place. Following a few list of fault codes 2019 polaris general best practices can save you a world of headaches on the trail.

A proper list of fault codes 2019 polaris general care guide is also a sustainable approach. Proactive maintenance is an eco-friendly practice because it prevents major component failures that create waste and avoids fluid leaks that can harm the environment.

Connector Care: Water, mud, and dust are the enemies of electrical connections. Periodically unplug critical sensor connectors, clean them with electrical contact cleaner, and apply a small amount of dielectric grease before reconnecting. This creates a moisture-proof seal.
Battery Health: Keep your battery on a tender, like a Battery Tender Jr., when your General isn’t in use for long periods. This drastically extends battery life and prevents low-voltage electrical gremlins.
Regular Inspections: Before every ride, do a quick walk-around. Look for any hanging wires, fluid drips, or anything that looks out of place. Catching a problem early in your driveway is always better than finding it 20 miles down a trail.

Frequently Asked Questions About 2019 Polaris General Fault Codes

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

It depends entirely on the code. If it’s a critical code like low oil pressure (SPN 100) or severe overheating, you should stop immediately. For a less critical code like an O2 sensor fault, you can usually limp back to the truck or home, but performance and fuel economy will suffer.

How do I clear a fault code on my 2019 General?

Once the underlying issue is fixed, the code will typically clear itself after three or four key cycles (turning the machine on and off). For an immediate reset, you can disconnect the negative battery terminal for about 10 minutes. This will clear all active codes.

What tools do I absolutely need to diagnose these fault codes?

At a minimum, you should have a basic socket and wrench set, a set of Torx bits, a digital multimeter, dielectric grease, and electrical contact cleaner. These tools will allow you to handle over 80% of the common electrical and sensor issues you’ll encounter.

Will my aftermarket exhaust or tuner cause fault codes?

Yes, it’s possible. An aftermarket exhaust can sometimes trigger an O2 sensor code if it changes the air-fuel ratio significantly. An engine tuner or “flash” is often required to recalibrate the fuel map to work with performance mods and prevent these codes.

Understanding the list of fault codes 2019 polaris general uses is like learning a new language—your machine’s language. It takes the guesswork out of troubleshooting and empowers you to take control of your own maintenance and repairs. By following this guide, you can diagnose issues with confidence, apply the right fixes, and spend less time in the garage and more time on the trail.

Now you’re armed with the knowledge to tackle those codes head-on. Get back out there, ride smart, and ride safe!

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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.