Discover step-by-step instructions to diagnose and clear the check engine light on your 2013 Chevy Impala. This guide covers OBD2 scanners, manual resets, and troubleshooting tips to keep your vehicle running smoothly in 2026.
Key Takeaways
- Understand the cause first: Never clear the check engine light without diagnosing the underlying issue—doing so may mask serious problems.
- Use an OBD2 scanner: This is the most reliable and accurate way to read trouble codes and reset the light on a 2013 Chevy Impala.
- Manual reset methods exist but are limited: Disconnecting the battery or using the gas pedal trick may work temporarily but won’t fix the root cause.
- Check common culprits: Faulty oxygen sensors, loose gas caps, and spark plug issues are frequent triggers for the light in this model.
- Clear codes only after repairs: Resetting the light before fixing the problem will likely result in it coming back on.
- Use quality tools: Invest in a reliable OBD2 scanner compatible with GM vehicles for best results.
- Monitor after reset: Drive your Impala for a few days to ensure the light doesn’t return and the issue is truly resolved.
How to Clear Check Engine Light 2013 Chevy Impala
If you’re driving a 2013 Chevy Impala and that dreaded check engine light has popped up on your dashboard, don’t panic—yet. While it’s easy to feel alarmed, this warning light is simply your car’s way of saying, “Hey, something needs attention.” The good news? In many cases, the issue is minor and fixable. Even better, you can often clear the light yourself without a costly trip to the mechanic.
In this comprehensive guide, updated for 2026, we’ll walk you through everything you need to know about clearing the check engine light on your 2013 Chevy Impala. You’ll learn how to diagnose the problem, use the right tools, and safely reset the light—whether you’re a seasoned DIYer or a first-time car owner. We’ll also cover common causes, troubleshooting tips, and what to do if the light keeps coming back.
By the end of this guide, you’ll have the confidence and know-how to handle this common automotive issue like a pro.
Why the Check Engine Light Comes On
Visual guide about How to Clear Check Engine Light 2013 Chevy Impala
Image source: dodgecheckenginelight.com
Before you rush to clear the light, it’s important to understand why it’s on in the first place. The check engine light—also known as the malfunction indicator lamp (MIL)—is part of your vehicle’s onboard diagnostics system (OBD2). When sensors detect a problem with the engine, emissions, or other critical systems, the computer stores a trouble code and triggers the light.
In the 2013 Chevy Impala, common triggers include:
– A loose or faulty gas cap
– Oxygen (O2) sensor failure
– Mass airflow (MAF) sensor issues
– Spark plug or ignition coil problems
– Catalytic converter inefficiency
– Exhaust gas recirculation (EGR) valve malfunction
Some of these issues are minor and inexpensive to fix, like tightening a gas cap. Others, like a failing catalytic converter, can be more serious and costly. That’s why diagnosing the root cause is the first and most important step.
Tools You’ll Need
To clear the check engine light on your 2013 Chevy Impala, you’ll need a few basic tools. Most are affordable and widely available online or at auto parts stores.
OBD2 Scanner
This is the most effective tool for reading and clearing trouble codes. Look for a scanner that’s compatible with GM vehicles and supports OBD2 protocols. In 2026, many budget-friendly scanners offer Bluetooth connectivity and smartphone apps, making them even easier to use.
Popular options include:
– BlueDriver Bluetooth Pro
– Ancel AD310
– Innova 3160
These scanners can read codes, provide definitions, and allow you to clear the light after repairs.
Basic Hand Tools
You may need a screwdriver, socket wrench, or pliers if you’re inspecting or replacing components like the gas cap or air filter.
Owner’s Manual
Your Impala’s manual contains valuable information about dashboard lights, fuse locations, and maintenance schedules. Keep it handy.
Smartphone or Tablet (Optional)
If your OBD2 scanner connects via Bluetooth, you’ll need a mobile device to view codes and data through an app.
Step-by-Step: How to Clear the Check Engine Light
Now that you understand the basics, let’s get into the step-by-step process. We’ll cover the most reliable method first: using an OBD2 scanner.
Step 1: Locate the OBD2 Port
The OBD2 port is where you’ll plug in your scanner. In the 2013 Chevy Impala, it’s typically located under the dashboard on the driver’s side, near the steering column. You may need to crouch down or use a flashlight to find it.
The port is a 16-pin connector, usually black or gray, and shaped like a trapezoid. It’s often labeled “OBD” or “DIAGNOSTIC.”
Step 2: Turn Off the Engine
Make sure your car is completely off before plugging in the scanner. This prevents electrical issues and ensures accurate readings.
Step 3: Plug in the OBD2 Scanner
Insert the scanner’s connector into the OBD2 port. It should fit snugly—don’t force it. If it doesn’t go in easily, double-check the orientation.
Step 4: Turn the Ignition to “On” (But Don’t Start the Engine)
Turn the key to the “ON” position. The dashboard lights will illuminate, but the engine should remain off. This powers up the car’s computer system so the scanner can communicate with it.
Step 5: Read the Trouble Codes
Follow your scanner’s instructions to read the codes. Most devices will display a list of Diagnostic Trouble Codes (DTCs), such as P0420 (catalytic converter efficiency below threshold) or P0171 (system too lean).
Write down the codes or take a photo for reference. These codes are your roadmap to fixing the problem.
Step 6: Research the Codes
Use your scanner’s built-in code definitions, a mobile app, or an online database like OBD-Codes.com to understand what each code means. For example:
– P0442: Small EVAP leak (often a loose gas cap)
– P0300: Random/multiple cylinder misfire
– P0135: O2 sensor heater circuit malfunction
Knowing the specific issue helps you decide whether to fix it yourself or seek professional help.
Step 7: Fix the Underlying Problem
This is the most critical step. Clearing the light without fixing the issue is like turning off a smoke alarm while the house is still on fire.
Common fixes for the 2013 Impala include:
– Tightening or replacing the gas cap
– Cleaning or replacing the MAF sensor
– Replacing spark plugs or ignition coils
– Replacing a faulty O2 sensor
For example, if your code is P0455 (large EVAP leak), check the gas cap first. Remove it, inspect the seal for cracks, and tighten it until you hear three clicks. If the cap is damaged, replace it with an OEM or high-quality aftermarket part.
If you’re unsure how to proceed, consult a repair manual or watch a YouTube tutorial specific to your Impala’s engine (3.6L V6 is standard).
Step 8: Clear the Codes
Once the issue is resolved, return to your OBD2 scanner. Most devices have a “Clear Codes” or “Erase DTCs” option. Select it and confirm.
The scanner will send a command to the car’s computer to reset the check engine light. You should see a message like “Codes Cleared” or “Reset Successful.”
Step 9: Turn Off the Ignition and Unplug the Scanner
Turn the key back to “OFF,” then unplug the scanner. Store it in a safe place for future use.
Step 10: Start the Engine and Verify
Start your Impala. The check engine light should be off. If it remains off after driving for a few minutes, the reset was successful.
Alternative Methods to Clear the Light
While the OBD2 scanner method is the most reliable, there are a few alternative ways to clear the check engine light. However, these should only be used if you don’t have access to a scanner—and only after addressing the root cause.
Method 1: Disconnect the Battery
This method resets the car’s computer by cutting power. It’s simple but has drawbacks.
Steps:
- Turn off the engine and remove the key.
- Open the hood and locate the battery.
- Use a wrench to loosen the negative (black) terminal clamp.
- Remove the negative cable and wait 15–30 minutes.
- Reconnect the cable and tighten the clamp.
- Start the car and check if the light is off.
Note: This method may also reset other systems, including your radio presets, clock, and adaptive transmission settings. In some cases, the light may return if the problem persists.
Method 2: Drive Cycle Reset
Some minor issues, like a loose gas cap, may resolve themselves after a few drive cycles. The car’s computer continuously monitors systems, and if no faults are detected over several trips, it may turn off the light automatically.
To encourage this:
– Drive at varying speeds (city and highway)
– Allow the engine to reach full operating temperature
– Complete 3–5 full drive cycles (start, drive, stop)
This can take a few days. If the light remains on, use an OBD2 scanner.
Method 3: Gas Pedal Trick (Not Recommended)
Some older GM vehicles respond to a “pedal dance” method: pressing the gas pedal three times in a row with the key on but engine off. However, this method is unreliable on the 2013 Impala and may not work at all.
We don’t recommend relying on it. Stick with the OBD2 scanner for best results.
Troubleshooting: What If the Light Comes Back?
If you’ve cleared the check engine light but it returns after a few days or weeks, don’t ignore it. This means the underlying issue wasn’t fully resolved—or a new problem has emerged.
Common Reasons the Light Returns
- Incomplete repair: For example, you tightened the gas cap but it was cracked and needs replacement.
- Intermittent fault: A sensor may work sometimes but fail under certain conditions (e.g., cold weather).
- Multiple issues: One problem may have triggered the light, but another exists that wasn’t diagnosed.
- Faulty scanner: A low-quality scanner may not read all codes or clear them properly.
What to Do
1. Re-scan the codes: Use your OBD2 scanner to check for new or recurring trouble codes.
2. Inspect recent repairs: Double-check your work. Did you install the correct part? Is it properly connected?
3. Monitor driving habits: Note when the light comes on—during acceleration, at idle, in cold weather? This can help pinpoint the issue.
4. Consult a mechanic: If you’re stuck, a professional diagnostic can save 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 seeing that light again.
Regular Maintenance
Follow your Impala’s maintenance schedule, which you can find in the owner’s manual. Key services include:
– Oil and filter changes every 5,000–7,500 miles
– Spark plug replacement every 100,000 miles
– Air filter replacement every 15,000–30,000 miles
– Fuel system cleaning every 30,000 miles
Check the Gas Cap
After every fill-up, make sure the gas cap is tight. A loose cap is one of the most common causes of the check engine light.
Use Quality Fuel
Stick to reputable gas stations and consider using a fuel additive occasionally to clean injectors and sensors.
Listen to Your Car
Unusual noises, rough idling, or reduced fuel economy can be early signs of trouble. Address them before they trigger a code.
Final Thoughts
Clearing the check engine light on your 2013 Chevy Impala doesn’t have to be stressful or expensive. With the right tools and a bit of know-how, you can diagnose the issue, make the repair, and reset the light yourself—all from your driveway.
Remember: the light is there to help you. Don’t just clear it and hope for the best. Take the time to understand what it’s telling you. Whether it’s a $10 gas cap or a $200 O2 sensor, fixing the problem now can prevent bigger, costlier repairs down the road.
In 2026, with advanced OBD2 scanners and online resources at your fingertips, there’s no reason to fear the check engine light. Arm yourself with knowledge, stay proactive with maintenance, and your Impala will keep running strong for years to come.