Clearing the check engine light on your 2013 Chevy Equinox doesn’t have to be stressful. This guide walks you through safe methods—from using an OBD2 scanner to resetting the system manually—while emphasizing the importance of diagnosing the root cause first.
Key Takeaways
- Diagnose before clearing: Always read the trouble code with an OBD2 scanner to understand why the light came on—don’t just reset it blindly.
- Use a quality OBD2 scanner: A reliable scanner helps identify specific issues like oxygen sensor faults or loose gas caps.
- Check the gas cap first: A loose or damaged gas cap is one of the most common causes of the check engine light in 2013 Equinox models.
- Clear codes properly: After repairs, use the scanner’s “clear codes” function or disconnect the battery (with precautions) to reset the system.
- Drive cycle matters: After clearing, complete a drive cycle so the vehicle’s computer can re-run emissions tests and confirm the fix.
- Battery disconnection risks: Disconnecting the battery may reset the light but can also erase radio settings, adaptive transmission data, and more.
- Monitor after reset: If the light returns, the issue persists—seek professional diagnosis to avoid long-term damage.
How to Clear Check Engine Light on 2013 Equinox
If you’re driving a 2013 Chevy Equinox and that dreaded check engine light pops up on your dashboard, don’t panic—but don’t ignore it either. While it might be tempting to just make the light disappear, the real key is understanding why it came on in the first place. In this comprehensive guide, you’ll learn how to safely and effectively clear the check engine light on your 2013 Equinox, whether you’re a DIY enthusiast or just trying to save a trip to the mechanic.
We’ll walk you through everything from diagnosing the problem with an OBD2 scanner to performing a proper reset—plus tips to prevent the light from coming back. By the end of this guide, you’ll know exactly what to do the next time that little orange icon glows on your dash.
Why the Check Engine Light Comes On
Visual guide about How to Clear Check Engine Light on 2013 Equinox
Image source: samarins.com
Before you even think about clearing the light, it’s crucial to understand what it means. The check engine light—also known as the malfunction indicator lamp (MIL)—is part of your vehicle’s onboard diagnostics system (OBD2). When the engine control unit (ECU) detects a problem that could affect emissions or engine performance, it triggers the light and stores a diagnostic trouble code (DTC).
In the 2013 Chevy Equinox, common causes include:
– A loose or faulty gas cap
– Oxygen (O2) sensor failure
– Mass airflow (MAF) sensor issues
– Catalytic converter problems
– Spark plug or ignition coil faults
– Exhaust gas recirculation (EGR) valve malfunctions
The light can range from a steady glow (indicating a minor issue) to a flashing light (signaling a serious problem that requires immediate attention). Ignoring a flashing light can lead to engine damage, reduced fuel efficiency, or even a breakdown.
So, while clearing the light is easy, fixing the underlying issue is what really matters.
Tools You’ll Need
Before you begin, gather these essential tools:
– OBD2 scanner (preferably one with code reading and clearing functions)
– Owner’s manual (for fuse box and battery location)
– Safety gloves and glasses (optional but recommended)
– 10mm wrench or socket (for battery terminal)
– Pen and paper (to note down trouble codes)
You can find affordable OBD2 scanners online or at auto parts stores. Many cost under $30 and plug directly into your vehicle’s OBD2 port—usually located under the dashboard near the driver’s side.
Step 1: Locate the OBD2 Port
The first step in diagnosing and clearing the check engine light is accessing your vehicle’s OBD2 port. In the 2013 Chevy Equinox, this port is typically found under the dashboard, to the left of the steering wheel. You may need to kneel or crouch to see it clearly.
Look for a 16-pin connector—it’s usually black or gray and shaped like a trapezoid. It might be covered by a small plastic flap. If you can’t find it, check your owner’s manual or look near the fuse panel.
Once located, make sure the area is clean and free of debris before plugging in your scanner.
Step 2: Read the Trouble Code
Now it’s time to find out what’s causing the light. Follow these steps:
Turn the Ignition On (But Don’t Start the Engine)
Insert your key and turn it to the “ON” position. This powers up the vehicle’s electrical system without starting the engine. You should see dashboard lights illuminate, including the check engine light.
Plug in the OBD2 Scanner
Connect your OBD2 scanner to the port. Most scanners will power on automatically. If not, press the power button.
Follow the Scanner’s Instructions
Use the menu to select “Read Codes” or “Scan for DTCs.” The scanner will communicate with the ECU and retrieve any stored trouble codes.
Common codes for the 2013 Equinox include:
– P0442: Evaporative Emission Control System Leak (often a loose gas cap)
– P0171: System Too Lean (could be MAF sensor or vacuum leak)
– P0300: Random/Multiple Cylinder Misfire
– P0420: Catalyst System Efficiency Below Threshold
Write down the code(s) and use the scanner’s built-in database or an online resource like OBD-Codes.com to understand what they mean.
Step 3: Address the Root Cause
Clearing the code without fixing the problem is like turning off a smoke alarm while the house is still on fire. The light will likely come back—and the issue could worsen.
Here’s how to handle the most common causes:
Check the Gas Cap
A loose, cracked, or missing gas cap is one of the top reasons for the check engine light in the 2013 Equinox. The evaporative emissions system monitors fuel vapor leaks, and a faulty cap can trigger a P0442 code.
– Turn off the engine and let the fuel system cool.
– Unscrew the gas cap and inspect it for damage.
– Reinstall it firmly—you should hear it click 3–5 times.
– If the cap is damaged, replace it with an OEM or high-quality aftermarket cap.
Inspect the Oxygen Sensors
The 2013 Equinox has multiple O2 sensors (usually two upstream and two downstream). A faulty sensor can cause poor fuel economy and increased emissions.
– Use your scanner to check for codes like P0130–P0167.
– Visually inspect the sensor wiring for damage.
– Replacement requires lifting the vehicle and using an O2 sensor socket. Consider professional help if you’re not experienced.
Clean or Replace the Mass Airflow Sensor
A dirty MAF sensor can cause rough idling, hesitation, and a P0171 code.
– Locate the MAF sensor (usually between the air filter box and throttle body).
– Disconnect the electrical connector.
– Remove the sensor and spray it with MAF cleaner (do not touch the wires).
– Let it dry completely before reinstalling.
Check for Spark Plug or Ignition Coil Issues
Misfire codes (P0300–P0306) often point to worn spark plugs or failing ignition coils.
– Remove the ignition coil(s) and inspect for cracks or carbon tracking.
– Check spark plug condition—replace if worn, fouled, or beyond service life.
– Use a torque wrench to reinstall coils and plugs to spec.
Step 4: Clear the Check Engine Light
Once you’ve addressed the issue, it’s time to clear the code. There are two main methods: using an OBD2 scanner or disconnecting the battery.
Method 1: Use an OBD2 Scanner (Recommended)
This is the safest and most reliable way to clear the check engine light.
– With the ignition on (engine off), plug in your scanner.
– Navigate to the “Clear Codes” or “Erase DTCs” option.
– Confirm the action when prompted.
– The scanner will send a command to the ECU to reset the system.
– The check engine light should turn off immediately.
Note: Some scanners may require you to turn the ignition off and back on after clearing.
Method 2: Disconnect the Battery (Alternative)
If you don’t have a scanner, you can reset the system by disconnecting the battery. However, this method has drawbacks.
Turn Off the Engine and Remove the Key
Ensure the vehicle is completely off.
Locate the Battery
In the 2013 Equinox, the battery is under the hood on the driver’s side.
Disconnect the Negative Terminal
Use a 10mm wrench to loosen the nut on the negative (black) battery terminal. Carefully remove the cable and tuck it away from the terminal to prevent accidental contact.
Wait 15–30 Minutes
This allows the ECU’s capacitors to discharge and the system to reset. Some sources recommend waiting up to an hour for a full reset.
Reconnect the Battery
Reattach the negative terminal and tighten it securely.
Turn the Ignition On
Turn the key to “ON” (do not start the engine). Wait a few seconds, then start the vehicle. The check engine light should be off.
⚠️ Warning: Disconnecting the battery may reset other systems, including:
– Radio presets and anti-theft codes
– Power window and sunroof positions
– Adaptive transmission shift points
– Climate control settings
You may need to reprogram these features after reconnection.
Step 5: Complete a Drive Cycle
Clearing the code is only half the battle. The vehicle’s computer needs to re-run its self-tests to confirm the issue is resolved. This process is called a “drive cycle.”
A drive cycle varies by vehicle, but for the 2013 Equinox, follow this general pattern:
1. Start the engine and let it idle for 2–3 minutes (cold start).
2. Drive at 30–40 mph for 5–10 minutes.
3. Accelerate to 55–60 mph and maintain speed for 10–15 minutes.
4. Decelerate without braking (coast) for 3–5 minutes.
5. Stop and idle for 2–3 minutes.
This allows the ECU to test systems like the oxygen sensors, catalytic converter, and evaporative emissions.
After completing the drive cycle, check if the check engine light remains off. If it returns, the problem may not be fully resolved.
Troubleshooting Common Issues
Even after clearing the light, you might run into problems. Here’s how to handle them:
The Light Comes Back On
If the check engine light reappears after clearing, the issue wasn’t fixed—or a new problem has developed.
– Re-scan for codes to see if the same or a new code appears.
– Double-check your repairs (e.g., ensure the gas cap is tight).
– Consider visiting a mechanic if the problem persists.
Scanner Won’t Connect
If your OBD2 scanner fails to communicate:
– Ensure the ignition is on.
– Check that the scanner is compatible with OBD2 (all 1996+ vehicles are).
– Try a different scanner or port.
– Inspect the OBD2 port for bent pins or corrosion.
Battery Disconnection Didn’t Work
Sometimes, disconnecting the battery doesn’t clear the code—especially if the issue is still present.
– Use an OBD2 scanner instead.
– Wait longer (up to an hour) before reconnecting.
– Ensure all electrical loads (lights, radio) are off during disconnection.
Radio or Settings Reset After Battery Disconnect
To restore settings:
– Re-enter radio presets.
– Re-calibrate power windows (hold switch up/down for 5 seconds after full travel).
– Drive the vehicle for 10–15 miles to relearn transmission shifts.
When to See a Mechanic
While many check engine light issues can be handled at home, some require professional diagnosis and repair.
Seek a mechanic if:
– The light is flashing (indicating a severe misfire).
– You’re unable to read or clear codes.
– The problem involves internal engine components (e.g., catalytic converter, head gasket).
– You lack the tools or confidence to perform repairs.
A certified technician has advanced scanners and can perform tests like smoke testing for vacuum leaks or compression testing for engine health.
Preventing Future Check Engine Lights
An ounce of prevention is worth a pound of cure. Here’s how to keep your 2013 Equinox running smoothly:
– Tighten the gas cap after every fill-up.
– Use high-quality fuel and change the fuel filter as recommended.
– Replace spark plugs and ignition coils at the manufacturer’s suggested interval (typically 100,000 miles).
– Keep the air filter clean.
– Address warning lights promptly—don’t delay repairs.
Regular maintenance not only prevents check engine lights but also extends the life of your vehicle.
Final Thoughts
Clearing the check engine light on your 2013 Chevy Equinox is a straightforward process—but it should never be done without understanding the cause. Whether you use an OBD2 scanner or disconnect the battery, always diagnose the issue first. A loose gas cap might be a quick fix, but a failing oxygen sensor or catalytic converter requires more attention.
By following this guide, you’ll not only clear the light but also ensure your Equinox runs efficiently and safely. Remember: the check engine light is your car’s way of saying, “Hey, I need help.” Listen to it, fix the problem, and enjoy the peace of mind that comes with a well-maintained vehicle.