How To Clear 2016 Polaris Codes 800 Sks

There’s nothing quite like the feeling of a perfect powder day being cut short. You’re geared up, the sled is warmed up, but then you see it—that dreaded check engine light blinking on your dash. It’s a moment that can sink your heart and your plans for the day.

I get it. We’ve all been there. You’re wondering if it’s a serious problem or just a temporary glitch. You just want to get back to riding without a cloud of worry hanging over your head.

Promise yourself this: by the end of this guide, you will have the confidence and knowledge to not only understand what those codes mean but also know exactly how to clear 2016 polaris codes 800 sks the right way. We’ll walk through reading the codes, the safe methods for clearing them, and most importantly, what to do if they come back. Let’s get your machine back in top shape.

Understanding Polaris Fault Codes: More Than Just a Nuisance

Before we grab any tools, let’s talk about what that check engine light and its associated codes actually mean. Think of a Diagnostic Trouble Code (DTC) as a specific message from your sled’s brain, the Engine Control Unit (ECU).

The ECU is constantly monitoring dozens of sensors—from engine temperature to exhaust valve position. When a sensor reading goes outside its normal operating range, even for a split second, the ECU flags it and stores a code. This is your machine’s way of saying, “Hey, I noticed something weird here. You should probably check it out.”

Active vs. Inactive (Stored) Codes

It’s crucial to understand that codes come in two main flavors:

Active Codes: This means the problem is happening right now. The check engine light will be on, and you might notice performance issues. Clearing an active code without fixing the underlying issue is like hitting snooze on a fire alarm—the code will come right back.
Inactive/Stored Codes: This means the ECU detected a problem in the past, but the issue is not currently present. This could be from a momentary sensor glitch, a loose connection that fixed itself, or a problem from a previous ride. These are often the codes that can be cleared without immediate concern.

One of the most common problems with how to clear 2016 polaris codes 800 sks is simply erasing the code without understanding why it appeared. This guide will help you avoid that rookie mistake.

Before You Clear Anything: The Crucial First Step

I can’t stress this enough: never clear a code without first reading and recording it. That code is a valuable piece of data, a breadcrumb leading you to the potential problem. Erasing it without writing it down is like throwing away the map to a hidden issue.

How to Read and Record Your Codes

Thankfully, Polaris makes it easy to access these codes right from your gauge cluster without any special tools. This is the first part of any good how to clear 2016 polaris codes 800 sks care guide.

Turn the ignition key to the ON position, but do not start the engine.
Press and hold the MODE/SELECT button on your dash or handlebar controls.
Use the up/down arrow buttons to scroll through the menu until you see “Diag Code” or a similar option. Select it.
The gauge will now display any stored fault codes. If there are multiple codes, you can scroll through them.
Write everything down! You’ll typically see a code number (e.g., 520207) and often an FMI number (Failure Mode Identifier). Get all of it. For example, “Code 520207, FMI 4”.

Looking Up the Code’s Meaning

Once you have the code, it’s time to play detective. Your owner’s manual is a good starting point, but a dedicated Polaris service manual for your 2016 800 SKS is even better. Online forums, like our community here at FatBoysOffroad, are also fantastic resources.

Remember, the code points you to a system or circuit. A code for the “Exhaust Gas Temperature Sensor” doesn’t automatically mean the sensor is bad. It could be a frayed wire, a corroded connector, or a problem with the ECU itself. The code is your starting point for diagnosis.

How to Clear 2016 Polaris Codes 800 SKS: The Step-by-Step Method

Okay, you’ve read and recorded the code, and you’ve determined it’s likely an old, inactive code or you’ve already fixed the underlying issue. Now it’s time to clear it. Here are the two primary, safe methods to do just that. This is the core of our how to clear 2016 polaris codes 800 sks guide.

Method 1: The “Ride It Out” Method (For Intermittent/Inactive Codes)

This might sound too simple, but it’s often the best way. Polaris ECUs are designed to self-correct. If the fault that caused the code is no longer present, the ECU will automatically clear the code after a certain number of successful “key-on/warm-up/key-off” cycles.

The exact number of cycles can vary, but it’s typically between 3 and 5. This is actually a sustainable and eco-friendly approach because it requires no tools and confirms the issue was temporary. The benefits of how to clear 2016 polaris codes 800 sks this way include confirming the problem has truly resolved itself.

If the code was for something minor, like a brief sensor hiccup due to extreme cold, this is the perfect method. If the light goes off and stays off after a couple of rides, you’re good to go.

Method 2: The Battery Disconnect Reset (The “Hard Reset”)

If you’ve fixed an issue (like replacing a faulty sensor) and want the code gone immediately, or if you want to perform a full system reset, the battery disconnect method is your go-to. This forces the ECU’s temporary memory to clear, taking the stored codes with it.

Safety First: Always work in a well-ventilated area and wear safety glasses. Batteries can be dangerous if handled improperly.

Turn Everything Off: Make sure the ignition is off and the key is removed from your sled.
Access the Battery: Locate your sled’s battery. You may need to remove a side panel or seat to get to it.
Disconnect the Negative Terminal: Using the correct size wrench (often 10mm), always disconnect the black negative (-) terminal first. Tuck the cable aside so it can’t accidentally touch the terminal.
Disconnect the Positive Terminal: Now, disconnect the red positive (+) terminal.
Wait It Out: This is a key step. You need to wait for at least 15-20 minutes. This allows the capacitors within the ECU and other electronic modules to fully discharge, wiping their volatile memory. Don’t rush this part.
Reconnect the Positive Terminal: When reconnecting, you do the reverse order. Attach and tighten the red positive (+) terminal first.
Reconnect the Negative Terminal: Finally, attach and tighten the black negative (-) terminal. Ensure both connections are snug.
Check Your Work: Turn the key to the ON position. The check engine light should be gone. Start the engine and let it run for a minute to confirm the code doesn’t immediately return.

The Code Came Back: Now What? Troubleshooting Best Practices

So, you cleared the code, but after a short ride, it’s back. This is your sled’s way of screaming that there is a real, active problem that needs to be fixed. Simply repeating the clearing process is pointless. It’s time to put on your diagnostic hat.

Following these how to clear 2016 polaris codes 800 sks best practices will save you time and money.

Start with the Simple Stuff: Wires and Connections

Before you order any parts, do a thorough visual inspection. More than 50% of electrical issues on off-road machines are caused by simple connection problems.

Look at the wiring harness related to the code you pulled. Check for any wires that are rubbed raw, pinched, or melted. Unplug the connector for the sensor in question. Is it full of snow, water, or dirt? Are the pins corroded or bent? Clean it out with electrical contact cleaner and apply some dielectric grease before reconnecting.

Inspect the Suspect Component

If the wiring looks perfect, turn your attention to the component itself. If the code is for a temperature sensor, is the sensor physically damaged? If it’s for the exhaust power valves (a common area on the 800), are they dirty and sticking? Use the code to guide your physical inspection.

When to Call in the Pros

There’s no shame in knowing your limits. If you’re dealing with a persistent code, complex wiring issues, or fuel system faults and you don’t have the right tools (like a multimeter and the knowledge to use it), it’s time to take it to a qualified technician. Throwing parts at a problem is the most expensive way to fix it. A good tech can diagnose the issue correctly the first time.

Benefits of Properly Addressing and Clearing Codes

Taking the time to do this right offers huge advantages beyond just turning off a light.

Peace of Mind: Nothing beats the confidence of knowing your machine is 100% healthy and ready for the backcountry.
Preventing Catastrophic Failure: A simple sensor code could be an early warning for a much bigger problem. Addressing it early can prevent a lean condition that could melt a piston, saving you thousands in repairs.
Optimal Performance: When all systems are go, your sled will run better, be more responsive, and use fuel more efficiently.
Sustainable Ownership: This is the ultimate eco-friendly how to clear 2016 polaris codes 800 sks tip. A well-maintained engine that is running as designed produces fewer emissions and consumes less fuel. Fixing small electronic issues prevents the need for major, resource-intensive mechanical repairs down the road.

Frequently Asked Questions About How to Clear 2016 Polaris Codes 800 SKS

Will disconnecting the battery harm my sled’s computer (ECU)?

No, not if done correctly. Disconnecting the battery for a hard reset is a standard diagnostic procedure. The ECU is designed to handle this. It will lose temporary data like fault codes and some learned fuel trims, but it will not lose its core programming.

Can I use an automotive OBD-II scanner on my Polaris?

No. Powersports vehicles like your 2016 SKS use a different diagnostic protocol and connector than cars and trucks. While some aftermarket specialty tools exist, the built-in dash diagnostic mode is your best and most accessible tool.

Why did the code disappear on its own?

This usually means the fault was intermittent. It could have been caused by a moment of water intrusion in a connector that has since dried out, a voltage fluctuation, or a sensor that was briefly out of range. If it doesn’t come back, you can generally consider it a non-issue.

Is it safe to ride with the check engine light on?

It depends entirely on the code. If the light is on solid and the machine seems to be running fine, you can likely limp it back to the truck carefully. If the light is flashing, or if the sled is running poorly, bogging down, or making strange noises, you should stop immediately to prevent severe engine damage.

Managing fault codes on your 2016 Polaris 800 SKS doesn’t have to be intimidating. By following these steps—read, understand, repair, and then clear—you’re not just turning off a light; you’re taking proactive control of your machine’s health.

It’s about being a smarter, more capable owner. Now you have the knowledge to tackle that check engine light with confidence. Get back out there, stay safe, and enjoy the ride!

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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.