Resetting the check engine light on a 2016 Kia Soul doesn’t have to be complicated. This guide walks you through safe, effective methods—from using an OBD2 scanner to driving cycles—so you can clear the light and confirm repairs. Always diagnose the root cause first to avoid recurring issues.
Key Takeaways
- Diagnose before resetting: Never reset the check engine light without identifying and fixing the underlying issue. Ignoring the problem can lead to engine damage or emissions failures.
- Use an OBD2 scanner for best results: A handheld scanner is the most reliable and recommended method to clear codes and reset the light on your 2016 Kia Soul.
- Battery disconnect is a temporary fix: Disconnecting the battery may reset the light, but it also erases important vehicle settings and may not clear all codes permanently.
- Drive cycles help confirm repairs: After resetting, complete a drive cycle to ensure the vehicle’s computer rechecks systems and confirms no active faults.
- Check gas cap first: A loose or faulty gas cap is a common cause of the check engine light—always inspect it before assuming a serious issue.
- Professional help is wise for complex codes: If the light returns or you’re unsure about the diagnosis, consult a certified mechanic or Kia dealership.
- Keep records of repairs and resets: Documenting when and why the light was reset helps track vehicle health and aids future diagnostics.
How to Reset Check Engine Light on 2016 Kia Soul
If you’ve recently fixed an issue with your 2016 Kia Soul—like tightening a loose gas cap or replacing an oxygen sensor—you might be wondering how to reset the check engine light. The good news? It’s easier than you think. But before you grab your tools, it’s important to understand that resetting the light isn’t just about turning it off. It’s about confirming that the problem has been resolved and your vehicle is running safely and efficiently.
In this comprehensive guide, we’ll walk you through several proven methods to reset the check engine light on your 2016 Kia Soul. Whether you’re a DIY enthusiast or just want to save a trip to the mechanic, you’ll learn how to use an OBD2 scanner, disconnect the battery, and even rely on drive cycles to clear the light. We’ll also cover common causes of the check engine light, troubleshooting tips, and when it’s time to call in a professional.
By the end of this guide, you’ll not only know how to reset the light—you’ll understand why it came on in the first place and how to prevent it from returning. Let’s get started.
Understanding the Check Engine Light
Before diving into reset methods, it’s crucial to understand what the check engine light actually means. On your 2016 Kia Soul, this warning light—often labeled “Check Engine” or “Service Engine Soon”—is part of the vehicle’s onboard diagnostic system (OBD2). When the car’s computer detects a problem with the engine, emissions system, or related components, it triggers the light to alert you.
The light can illuminate for a wide range of reasons, from minor issues like a loose gas cap to more serious problems like a failing catalytic converter or misfiring engine. The severity can vary: a steady light usually indicates a moderate issue, while a flashing light signals a serious problem that requires immediate attention.
Ignoring the check engine light can lead to reduced fuel efficiency, increased emissions, and even engine damage over time. That’s why it’s essential to diagnose the root cause before attempting to reset it. Resetting the light without fixing the problem is like turning off a smoke alarm while the house is still on fire—it doesn’t solve anything.
Common Causes of the Check Engine Light on a 2016 Kia Soul
Knowing what might have triggered the light can help you address the issue quickly. Here are some of the most common causes specific to the 2016 Kia Soul:
Loose or Faulty Gas Cap
One of the simplest and most frequent causes is a loose, damaged, or missing gas cap. The gas cap seals the fuel system, and if it’s not tight, fuel vapors can escape, triggering an evaporative emissions code (like P0455 or P0457). Always check the cap first—it’s free and takes less than a minute.
Visual guide about How to Reset Check Engine Light on 2016 Kia Soul
Image source: kiacheckenginelight.com
Oxygen (O2) Sensor Failure
The O2 sensors monitor the amount of oxygen in the exhaust gases. A faulty sensor can cause poor fuel economy and increased emissions. On the 2016 Soul, O2 sensor issues are relatively common and often trigger codes like P0130 or P0150.
Mass Airflow (MAF) Sensor Problems
The MAF sensor measures how much air enters the engine. If it’s dirty or malfunctioning, the engine may run rich or lean, leading to performance issues and a check engine light. Cleaning or replacing the MAF sensor can often resolve this.
Catalytic Converter Issues
A failing catalytic converter can trigger codes like P0420. This is a more serious and expensive repair, but it’s not uncommon in older Souls, especially if the vehicle has high mileage or has had unresolved engine issues.
Spark Plugs or Ignition Coils
Misfires caused by worn spark plugs or faulty ignition coils can trigger codes such as P0300 (random misfire) or P0301–P0304 (cylinder-specific misfires). These are usually easy to fix with replacement parts.
Evaporative Emissions System Leaks
Small leaks in the EVAP system—such as cracked hoses or a faulty purge valve—can cause the light to come on. These are often harder to detect but can be diagnosed with a smoke test.
Thermostat or Coolant Temperature Sensor
If the engine isn’t reaching proper operating temperature, it can affect emissions and performance. A stuck-open thermostat or faulty coolant sensor may trigger a code like P0128.
Method 1: Using an OBD2 Scanner (Recommended)
The most reliable and accurate way to reset the check engine light on your 2016 Kia Soul is by using an OBD2 (On-Board Diagnostics) scanner. This tool reads the diagnostic trouble codes (DTCs) stored in your car’s computer, allowing you to identify the problem and then clear the codes once it’s fixed.
What You’ll Need
- OBD2 scanner (available at auto parts stores or online for $20–$100)
- Access to the OBD2 port (located under the dashboard, usually near the driver’s knee)
- Your vehicle’s ignition key
Step-by-Step Instructions
Step 1: Locate the OBD2 Port
The OBD2 port on the 2016 Kia Soul is typically found under the dashboard on the driver’s side, near the steering column. It’s a 16-pin connector, usually black or gray. You may need to crouch down or use a flashlight to find it.
Step 2: Plug in the Scanner
Turn off the engine, then plug the OBD2 scanner into the port. Make sure it’s securely connected. Some scanners will power on automatically when plugged in.
Step 3: Turn the Ignition to “On”
Turn the key to the “ON” position (but don’t start the engine). This powers up the vehicle’s computer and allows the scanner to communicate with it.
Step 4: Read the Codes
Follow the scanner’s on-screen prompts to read the diagnostic trouble codes. Most scanners will display the codes (e.g., P0420) and may offer a brief description. Write down the codes for reference.
Step 5: Fix the Underlying Issue
Before clearing the codes, make sure you’ve addressed the problem. For example, if the code indicates a loose gas cap, tighten or replace it. If it’s an O2 sensor, replace it. Never clear codes without fixing the root cause.
Step 6: Clear the Codes
Once the issue is resolved, use the scanner’s “Clear Codes” or “Erase DTCs” function. This will reset the check engine light. The scanner may ask for confirmation—select “Yes” or “OK.”
Step 7: Turn Off the Ignition and Unplug
Turn the key back to “OFF,” then unplug the scanner. Start the engine to confirm the light is off. If it remains off after driving for a few minutes, the reset was successful.
Tips for Using an OBD2 Scanner
- Choose a scanner with code definitions—some basic models only show codes without explanations.
- Bluetooth scanners that connect to your smartphone (via apps like Torque) are convenient and affordable.
- Always clear codes after repairs—don’t assume the light will turn off on its own.
- If the light comes back on, the problem may not be fully resolved—re-scan and re-diagnose.
Method 2: Disconnecting the Battery
If you don’t have an OBD2 scanner, disconnecting the battery is a common alternative. This method forces the vehicle’s computer to reset by cutting power, which can clear the check engine light. However, it’s not always reliable and comes with some drawbacks.
What You’ll Need
- Wrench or socket set (usually 10mm)
- Safety gloves and glasses
- Your vehicle’s owner’s manual (optional)
Step-by-Step Instructions
Step 1: Turn Off the Engine and Remove the Key
Make sure the vehicle is completely off and the key is removed from the ignition.
Step 2: Locate the Battery
The battery in the 2016 Kia Soul is under the hood, on the driver’s side. It’s a standard 12-volt lead-acid battery.
Step 3: Disconnect the Negative Terminal
Use a wrench to loosen the nut on the negative (black) battery terminal. Carefully remove the cable and tuck it away from the battery to prevent accidental contact.
Step 4: Wait 15–30 Minutes
Leave the battery disconnected for at least 15 minutes. This allows the vehicle’s computer (ECU) to fully discharge and reset. Some recommend up to 30 minutes for a complete reset.
Step 5: Reconnect the Battery
Reattach the negative terminal and tighten the nut securely. Make sure the connection is tight to avoid electrical issues.
Step 6: Start the Engine
Turn the key to “ON” and then start the engine. The check engine light should be off. If it returns, the underlying issue may still exist.
Limitations and Warnings
- Not all codes are cleared: Some stored codes may remain in the system even after a battery disconnect.
- Resets vehicle settings: This method can reset the radio presets, clock, seat memory, and climate control settings.
- May trigger other warnings: Disconnecting the battery can sometimes trigger other warning lights (like ABS or airbag) that require a scanner to clear.
- Temporary fix: If the problem isn’t fixed, the light will likely return within a few drive cycles.
Method 3: Drive Cycle Reset (Natural Clearing)
In some cases, the check engine light may turn off on its own after the issue is resolved and the vehicle completes a series of driving conditions known as a “drive cycle.” This method relies on the car’s computer to recheck systems and confirm no active faults.
What Is a Drive Cycle?
A drive cycle is a specific sequence of driving conditions that allows the vehicle’s onboard computer to run self-tests on emissions and engine systems. Once all tests pass, the computer may automatically clear the codes and turn off the check engine light.
Typical Drive Cycle for 2016 Kia Soul
While exact requirements vary, a general drive cycle includes:
- Start the engine cold (let it idle for 2–3 minutes)
- Drive at 30–40 mph for 5–10 minutes
- Accelerate to 55–60 mph and maintain speed for 5 minutes
- Decelerate without braking (coast in gear)
- Stop and idle for 2–3 minutes
- Repeat if necessary
Tips for Success
- Complete the drive cycle in one session without turning off the engine.
- Avoid short trips—longer drives give the computer time to run tests.
- Ensure the gas cap is tight and all repairs are complete.
- It may take multiple drive cycles for the light to turn off.
Troubleshooting Common Issues
Even after resetting the light, you may encounter problems. Here’s how to handle common scenarios:
Check Engine Light Comes Back On
If the light returns shortly after resetting, the original issue likely wasn’t fully resolved. Re-scan for codes and double-check your repairs. For example, a new O2 sensor may need time to “learn,” or a gas cap may still be faulty.
Scanner Won’t Connect
If your OBD2 scanner won’t communicate with the vehicle, check the fuse for the OBD2 port (usually in the cabin fuse box). Also, ensure the ignition is in the “ON” position and the scanner is compatible with your vehicle.
Battery Disconnect Didn’t Work
If disconnecting the battery didn’t clear the light, the codes may be “hard” or “pending.” Use an OBD2 scanner for a more reliable reset. Also, check for corrosion on the battery terminals.
Other Warning Lights Appear
Disconnecting the battery can trigger other systems. If the ABS or airbag light comes on, use a scanner to clear them or visit a mechanic.
When to See a Mechanic
While many check engine light issues can be resolved at home, some situations require professional help:
- The light is flashing (indicates a severe misfire that can damage the catalytic converter)
- You’re unsure how to interpret or fix the diagnostic code
- The vehicle is running poorly, overheating, or making unusual noises
- The light keeps returning after multiple resets
- You don’t have access to an OBD2 scanner or the right tools
A certified mechanic or Kia dealership can perform advanced diagnostics, including smoke tests for EVAP leaks or compression tests for engine issues.
Conclusion
Resetting the check engine light on your 2016 Kia Soul is a straightforward process—but only after you’ve identified and fixed the underlying problem. The best method is using an OBD2 scanner, which gives you accurate diagnostic information and a reliable way to clear codes. Disconnecting the battery can work in a pinch, but it’s less effective and can reset other systems. Drive cycles may help the light turn off naturally, but they’re not guaranteed.
Remember: the check engine light is your car’s way of saying, “Hey, something’s not right.” Don’t ignore it. Address the root cause, reset the light properly, and keep your Soul running smoothly for years to come. With the right tools and a little know-how, you can handle this common issue like a pro.