This guide walks you through how to reset check engine light on 2019 RZR 1000 using built-in methods and diagnostic tools. You’ll also learn when a reset is safe and when professional help is needed.
Key Takeaways
- Understand the cause first: Never reset the light without diagnosing the underlying issue—doing so can mask serious engine problems.
- Use the OBD2 port: The 2019 RZR 1000 has a standard OBD2 port under the dash, making it compatible with most scan tools.
- Try the key cycle method: Turning the key on and off several times can sometimes clear minor error codes.
- Invest in a quality scan tool: A basic OBD2 scanner helps read and clear codes without a trip to the dealer.
- Battery disconnect isn’t reliable: Simply unplugging the battery rarely resets the ECU on modern UTVs like the RZR 1000.
- Monitor after reset: Always test ride and watch for the light returning—it could signal a recurring issue.
- Keep records: Log any codes and repairs to help with future troubleshooting or resale.
How to Reset Check Engine Light on 2019 RZR 1000
If you’re the proud owner of a 2019 Polaris RZR 1000, you know how thrilling it is to tear up trails, cruise dunes, or explore backcountry roads. But nothing kills the vibe faster than that pesky check engine light popping up on your dashboard. It’s like your UTV is saying, “Hey, something’s not right—pay attention!”
Don’t panic. While the check engine light (also known as the malfunction indicator lamp or MIL) should never be ignored, resetting it on your 2019 RZR 1000 is often straightforward—especially if you’ve already fixed the problem that triggered it. In this comprehensive guide, you’ll learn exactly how to reset the check engine light on your 2019 RZR 1000, step by step. We’ll cover built-in reset methods, the use of diagnostic tools, troubleshooting tips, and important safety considerations.
Whether you’re a weekend warrior or a full-time off-road enthusiast, this guide will help you take control of your RZR’s health and keep it running smoothly. Let’s dive in.
Why the Check Engine Light Comes On
Visual guide about How to Reset Check Engine Light on 2019 Rzr 1000
Image source: techcult.com
Before we get into the reset process, it’s crucial to understand why the check engine light appears in the first place. The 2019 RZR 1000 is equipped with an advanced onboard diagnostic system (OBD2) that constantly monitors engine performance, emissions, fuel delivery, and other critical systems. When the system detects a fault—such as a misfire, oxygen sensor issue, or loose gas cap—it triggers the check engine light and stores a diagnostic trouble code (DTC).
Common causes include:
– Loose or faulty gas cap
– Faulty oxygen (O2) sensor
– Mass airflow (MAF) sensor issues
– Spark plug or ignition coil problems
– Exhaust gas recirculation (EGR) valve malfunction
– Catalytic converter inefficiency
– Engine misfires
Ignoring these codes can lead to reduced performance, poor fuel economy, or even engine damage. That’s why diagnosing the root cause is the first and most important step—before any reset.
Tools You’ll Need
You don’t need a full mechanic’s toolbox to reset the check engine light on your 2019 RZR 1000, but having the right tools makes the job easier and safer. Here’s what you’ll need:
- OBD2 Scan Tool: A basic code reader (around $20–$50) can read and clear codes. Look for one compatible with Polaris UTVs or universal OBD2 scanners.
- Smartphone with Bluetooth (optional): Some scanners connect via Bluetooth to apps like Torque Pro (Android) or OBD Fusion (iOS), giving you real-time data.
- Safety gloves and glasses: Always protect yourself when working near the engine or electrical systems.
- Owner’s manual: Keep it handy for wiring diagrams, fuse locations, and model-specific info.
- Clean rag and compressed air: Useful for cleaning connectors or the OBD2 port.
If you don’t have a scan tool yet, consider investing in one. It pays for itself the first time you avoid a costly dealer visit.
Step 1: Diagnose the Problem
Never reset the check engine light without first identifying why it came on. Resetting it without fixing the issue is like turning off a fire alarm while the house is still burning—it doesn’t solve the problem.
Locate the OBD2 Port
The 2019 RZR 1000 has a standard 16-pin OBD2 port, usually located under the dashboard on the driver’s side. You may need to crouch down and look up near the steering column. It’s often tucked behind a small panel or near the fuse box. The port looks like a trapezoid-shaped connector with multiple pins inside.
Connect the Scan Tool
Plug your OBD2 scanner into the port. Make sure the ignition is in the “ON” position (but the engine doesn’t need to be running). Most scanners will power up automatically and prompt you to select options.
Read the Trouble Codes
Follow the scanner’s instructions to retrieve the stored DTCs. These codes are usually in the format “P0XXX” (e.g., P0135 for an O2 sensor heater circuit issue). Write down the code(s) and use the scanner’s built-in database or an online resource like OBD-Codes.com to interpret them.
For example:
– P0300 = Random/Multiple Cylinder Misfire
– P0171 = System Too Lean (Bank 1)
– P0455 = Large Evaporative Emission Leak
Once you know the code, research the likely cause. Some issues, like a loose gas cap, are easy to fix yourself. Others may require professional diagnosis.
Address the Underlying Issue
Fix the problem before resetting the light. For instance:
– Tighten or replace the gas cap
– Clean or replace the MAF sensor
– Replace faulty spark plugs or coils
– Repair vacuum leaks
If you’re unsure how to fix the issue, consult a Polaris-certified technician. Driving with an unresolved problem can cause further damage.
Step 2: Reset the Check Engine Light
Once the issue is resolved, you can safely reset the check engine light. There are several methods, ranging from simple key cycles to using a scan tool.
Method 1: Use an OBD2 Scan Tool (Recommended)
This is the most reliable and accurate way to reset the light.
Step-by-Step Instructions:
- Ensure the ignition is ON (engine off).
- Plug the scan tool into the OBD2 port.
- Navigate to the “Clear Codes” or “Erase DTCs” option on the scanner.
- Confirm the reset when prompted.
- Wait a few seconds—the scanner will confirm the codes are cleared.
- Turn the ignition OFF, then back ON to verify the check engine light is off.
Tip: Some scanners also allow you to view live data (like engine RPM, coolant temp, and fuel trim) to confirm the system is operating normally after the reset.
Method 2: Key Cycle Method (Limited Effectiveness)
Some older vehicles allow you to reset the ECU by cycling the ignition key multiple times. While this method rarely works on modern UTVs like the 2019 RZR 1000, it’s worth a try if you don’t have a scan tool.
How to Do It:
- Turn the ignition to the ON position (do not start the engine).
- Wait 3 seconds.
- Turn the ignition OFF.
- Wait 3 seconds.
- Repeat this cycle 3–5 times.
- Start the engine and check if the light is off.
Note: This method only works for very minor glitches and may not clear stored codes. It’s not a substitute for a proper scan tool reset.
Method 3: Battery Disconnect (Not Recommended)
Many people believe that disconnecting the battery will reset the ECU and clear the check engine light. While this used to work on older vehicles, modern UTVs like the 2019 RZR 1000 have volatile memory that retains codes even when power is lost.
Why It Doesn’t Work Well:
– The ECU may retain fault codes in non-volatile memory.
– Disconnecting the battery can reset other systems (radio presets, clock, etc.), which is inconvenient.
– It may trigger new codes if the system detects an abnormal power loss.
If you still want to try it:
- Turn off the ignition and remove the key.
- Disconnect the negative (-) battery terminal using a wrench.
- Wait 15–30 minutes to allow the ECU to fully discharge.
- Reconnect the battery and start the engine.
Warning: This method is unreliable and not recommended as a primary reset technique.
Step 3: Test Ride and Monitor
After resetting the light, take your RZR for a short test ride—about 10–15 minutes—under normal driving conditions. This allows the ECU to complete its drive cycle and re-monitor all systems.
What to Watch For:
– Does the check engine light come back on?
– Is the engine running smoothly?
– Are there any unusual noises, vibrations, or performance issues?
If the light returns, the problem wasn’t fully resolved. Re-scan for codes and investigate further. Some issues, like intermittent sensor faults, may take multiple drive cycles to reappear.
Complete Drive Cycle (Optional)
For thorough monitoring, you can perform a complete drive cycle to ensure all emissions systems are tested:
– Start the engine and let it idle for 2–3 minutes (cold start).
– Drive at 30–40 mph for 5 minutes.
– Accelerate to 55 mph and maintain speed for 3 minutes.
– Decelerate without braking for 1 minute.
– Repeat if necessary.
This helps the ECU verify that repairs were successful.
Troubleshooting Common Reset Issues
Even with the right tools, you might run into problems. Here’s how to handle common issues:
Check Engine Light Won’t Turn Off
– The underlying issue may still exist. Re-scan for codes and verify repairs.
– The ECU may need more time to complete its self-tests. Drive the vehicle normally for a few days.
– A faulty sensor or wiring issue could be preventing the system from clearing.
Scan Tool Won’t Connect
– Ensure the ignition is ON.
– Check that the OBD2 port is clean and undamaged.
– Try a different scanner or update the firmware.
– Verify compatibility with Polaris UTVs—some generic scanners don’t work well with off-road vehicles.
New Codes Appear After Reset
– This could indicate a secondary issue or a problem with the repair.
– For example, replacing a spark plug might reveal a weak ignition coil.
– Re-diagnose and address all active and pending codes.
Battery Dies After Disconnect
– The RZR’s electrical system may have drawn residual power.
– Recharge or jump-start the battery before attempting to start.
– Consider replacing an old or weak battery.
Safety and Best Practices
Working on your RZR’s electrical system requires caution. Follow these safety tips:
- Always turn off the ignition before connecting or disconnecting any components.
- Wear safety gloves and glasses to protect against sparks or battery acid.
- Never work on a hot engine—let it cool down first.
- Use insulated tools to avoid short circuits.
- Keep water and dirt away from the OBD2 port and electrical connectors.
- Don’t force connectors—they should plug in smoothly.
Also, remember that resetting the check engine light doesn’t fix mechanical problems. If your RZR is running rough, overheating, or losing power, seek professional help immediately.
When to See a Mechanic
While many check engine light issues can be resolved at home, some situations require expert attention:
– The light is flashing (indicates a severe misfire that can damage the catalytic converter).
– You’re getting multiple or complex codes (e.g., P0300, P0420).
– The problem involves the transmission, fuel system, or engine internals.
– You’ve tried resetting the light multiple times, but it keeps returning.
– You’re not comfortable performing diagnostics or repairs.
A certified Polaris technician has access to advanced diagnostic tools and factory service information, which can save you time and money in the long run.
Preventing Future Check Engine Lights
An ounce of prevention is worth a pound of cure. Here’s how to reduce the chances of the check engine light coming on:
- Perform regular maintenance: Change oil, air filter, and spark plugs at recommended intervals.
- Use quality fuel and oil: Avoid cheap or contaminated fuels that can harm sensors.
- Inspect the gas cap: Make sure it’s tight and the seal isn’t cracked.
- Clean sensors: Periodically clean the MAF and O2 sensors with appropriate cleaners.
- Check for loose hoses: Inspect vacuum lines and intake hoses for cracks or leaks.
- Store properly: Keep your RZR in a dry, covered area to prevent moisture damage.
A well-maintained RZR is less likely to trigger warning lights and will deliver better performance and longevity.
Conclusion
Resetting the check engine light on your 2019 RZR 1000 doesn’t have to be intimidating. By following the steps in this guide—starting with diagnosing the problem, using the right tools, and safely clearing the codes—you can take control of your UTV’s health and get back to riding with confidence.
Remember, the check engine light is there to protect your investment. Never ignore it, and always address the root cause before resetting. With a basic OBD2 scanner and a little know-how, you can save time, money, and stress.
Keep this guide bookmarked for future reference, and don’t forget to log any repairs or codes for your records. Your RZR will thank you with smooth rides and fewer surprises on the trail.
Now go enjoy the ride—responsibly.