How to Reset Engine Light on 2017 Chevy Malibu

Discover the safest and most effective ways to reset the engine light on your 2017 Chevy Malibu. This guide covers manual methods, OBD2 scanners, and troubleshooting tips to ensure your vehicle runs smoothly.

Key Takeaways

• Understand the engine light: The check engine light indicates potential issues with your vehicle’s engine or emissions system. It’s important to diagnose the problem before resetting the light.
• Use an OBD2 scanner for accuracy: A diagnostic tool provides precise error codes and allows you to reset the light safely after repairs.
• Manual reset methods have limitations: Disconnecting the battery or using the gas pedal method may work temporarily but won’t fix underlying issues.
• Clear codes only after repairs: Resetting the light without fixing the root cause can lead to recurring problems or failed inspections.
• Monitor your vehicle post-reset: Drive normally for a few days to ensure the light doesn’t return and that all systems are functioning properly.
• Keep records of repairs and resets: Maintaining a log helps track maintenance history and supports future diagnostics.
• Consult a professional if unsure: If you’re unable to identify or fix the issue, seek help from a certified mechanic.

How to Reset Engine Light on 2017 Chevy Malibu

If you’ve noticed the check engine light glowing on your 2017 Chevy Malibu’s dashboard, you’re not alone. This warning light can appear for a variety of reasons—some minor, like a loose gas cap, and others more serious, such as a malfunctioning oxygen sensor or catalytic converter issue. While the light itself isn’t dangerous, ignoring it can lead to reduced fuel efficiency, engine damage, or even failing a state emissions test.

The good news? Resetting the engine light on your 2017 Chevy Malibu is a straightforward process—especially if you have the right tools and knowledge. In this comprehensive guide, we’ll walk you through multiple methods to reset the check engine light, explain why it came on in the first place, and help you avoid common mistakes. Whether you’re a DIY enthusiast or just looking to save a trip to the mechanic, this guide has you covered.

By the end of this article, you’ll know exactly how to reset the engine light on your 2017 Chevy Malibu, understand what the light means, and ensure your car continues running smoothly. Let’s get started.

Why Is the Check Engine Light On?

Before you reset the engine light, it’s crucial to understand why it turned 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 the system detects a problem with the engine, emissions, or related components, it triggers the light to alert you.

Common reasons for the check engine light to illuminate on a 2017 Chevy Malibu include:

• Loose or damaged gas cap: This is one of the most frequent causes. A loose cap allows fuel vapors to escape, triggering an evaporative emissions system fault.
• Faulty oxygen (O2) sensor: This sensor monitors the amount of unburned oxygen in the exhaust. A malfunction can reduce fuel efficiency and increase emissions.
• Catalytic converter issues: A failing converter can’t properly convert harmful gases, leading to performance problems and increased emissions.
• Mass airflow (MAF) sensor problems: This sensor measures the amount of air entering the engine. If it’s dirty or faulty, it can cause poor acceleration and rough idling.
• Spark plug or ignition coil failure: Worn spark plugs or bad coils can cause misfires, reducing engine performance and triggering the light.
• Evaporative emissions system leak: Small leaks in the fuel vapor system can set off the light even if they’re hard to detect.

Ignoring the check engine light can lead to more serious problems down the road. For example, a misfiring engine can damage the catalytic converter, which is expensive to replace. That’s why it’s essential to diagnose the issue before resetting the light.

Tools You’ll Need to Reset the Engine Light

To reset the engine light on your 2017 Chevy Malibu, you’ll need a few basic tools. The method you choose will determine what you need, but here’s a list of common items:

• OBD2 scanner: This is the most reliable tool for reading and clearing error codes. You can find affordable models online or at auto parts stores. Look for one that’s compatible with your vehicle and easy to use.
• Owner’s manual: Your Chevy Malibu’s manual contains valuable information about the dashboard lights, fuse box location, and reset procedures.
• Basic hand tools: If you’re disconnecting the battery, you’ll need a wrench or socket set to remove the negative terminal.
• Pen and paper: Use this to write down error codes before clearing them, especially if you plan to research the issue later.
• Smartphone or computer: Many OBD2 scanners connect via Bluetooth to a mobile app, allowing you to view and clear codes on your phone.

While you can attempt a manual reset without tools, using an OBD2 scanner is strongly recommended. It gives you accurate diagnostic information and ensures you’re addressing the real problem.

Method 1: Using an OBD2 Scanner (Recommended)

The most effective and reliable way to reset the engine light on your 2017 Chevy Malibu is by using an OBD2 scanner. This method allows you to read the specific error code, understand the issue, and clear the light after repairs.

Step 1: Locate the OBD2 Port

The OBD2 port in your 2017 Chevy Malibu is typically located under the dashboard on the driver’s side. It’s a 16-pin connector, usually black or gray, and may be covered by a small panel. To find it:

• Sit in the driver’s seat and look down near the steering column.
• You may need to crouch or use a flashlight to spot it.
• The port is often positioned just above the brake pedal or to the left of it.

If you can’t find it, consult your owner’s manual for the exact location.

Step 2: Turn the Ignition to the “On” Position

Before connecting the scanner, turn the key to the “on” position without starting the engine. This powers up the vehicle’s electrical system and allows the scanner to communicate with the onboard computer.

• Insert the key and turn it to the second position (where the dashboard lights up).
• Do not start the engine unless the scanner instructions specify otherwise.

Step 3: Connect the OBD2 Scanner

Plug the OBD2 scanner into the port. Make sure it’s fully inserted and secure. Most scanners will power on automatically when connected.

• If your scanner has a power button, press it to turn it on.
• Wait a few seconds for the device to initialize and establish a connection with the vehicle’s computer.

Step 4: Read the Error Codes

Once connected, use the scanner’s menu to read the diagnostic trouble codes (DTCs). These codes tell you exactly what’s wrong with your vehicle.

• Press the “Read” or “Scan” button on the device.
• The scanner will display one or more codes (e.g., P0420, P0171).
• Write down the codes for reference.

Each code corresponds to a specific issue. For example, P0420 indicates a problem with the catalytic converter, while P0171 means the engine is running too lean.

Step 5: Research the Codes

Use your smartphone or computer to look up the meaning of the codes. Websites like OBD-Codes.com or your scanner’s companion app can provide detailed explanations.

• Identify the root cause of the problem.
• Determine whether it’s something you can fix yourself (like tightening the gas cap) or if it requires professional help.

Step 6: Fix the Underlying Issue

Before resetting the light, address the problem that triggered it. For example:

• If the code is P0455 (large evaporative leak), check and tighten the gas cap.
• If it’s P0135 (O2 sensor heater circuit), you may need to replace the sensor.
• For P0300 (random misfire), inspect spark plugs and ignition coils.

Fixing the issue ensures the light won’t come back on immediately after reset.

Step 7: Clear the Codes and Reset the Light

Once the problem is resolved, use the scanner to clear the codes and reset the engine light.

• Navigate to the “Clear Codes” or “Erase DTCs” option on the scanner.
• Confirm the action when prompted.
• The scanner will send a command to the vehicle’s computer to turn off the check engine light.

After clearing the codes, the light should go off. If it remains on, the issue may not be fully resolved, or there could be additional problems.

Step 8: Test Drive the Vehicle

Take your Malibu for a short drive to ensure everything is working properly.

• Drive for at least 10–15 minutes, including highway speeds if possible.
• This allows the onboard computer to run system checks and confirm the issue is fixed.
• If the light stays off, the reset was successful.

Using an OBD2 scanner is the best method because it gives you accurate diagnostics and ensures you’re not just masking a problem. It’s also reusable for future maintenance.

Method 2: Disconnecting the Battery (Manual Reset)

If you don’t have an OBD2 scanner, you can try resetting the engine light by disconnecting the battery. This method forces the vehicle’s computer to reset, which may clear the light—but it’s not guaranteed and comes with risks.

Step 1: Turn Off the Engine and Remove the Key

Make sure the car is completely off and the key is out of the ignition.

• Let the engine cool down if it was recently running.
• This prevents accidental shocks or damage.

Step 2: Locate the Battery

The battery in the 2017 Chevy Malibu is located in the engine compartment on the driver’s side.

• Open the hood and secure it with the prop rod.
• Look for a rectangular box with two cables attached—one red (positive) and one black (negative).

Step 3: Disconnect the Negative Terminal

Use a wrench or socket 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.
• Do not disconnect the positive terminal first—this can cause sparks or short circuits.

Step 4: Wait 15–30 Minutes

Leave the battery disconnected for at least 15 minutes. This allows the vehicle’s computer to fully reset.

• The longer you wait, the more likely the system will clear stored codes.
• Some sources recommend up to 30 minutes for a complete reset.

Step 5: Reconnect the Battery

After waiting, reattach the negative cable and tighten the nut securely.

• Make sure the connection is tight to avoid electrical issues.
• Close the hood once done.

Step 6: Start the Engine

Turn the key to start the engine. The check engine light may flash briefly, then turn off.

• If the light stays off, the reset was successful.
• If it comes back on, the underlying issue wasn’t resolved.

Limitations of the Battery Method

While disconnecting the battery can reset the engine light, it has several drawbacks:

• It doesn’t fix the problem: The light may return once the computer detects the same issue.
• It resets other systems: You may lose radio presets, clock settings, and adaptive transmission settings.
• It’s not always effective: Modern vehicles store codes in non-volatile memory, so a simple disconnect may not clear them.

This method should only be used as a last resort or for minor issues like a loose gas cap.

Method 3: The Gas Pedal Method (Not Recommended)

Some online sources suggest a “gas pedal method” to reset the engine light on certain GM vehicles, including the Chevy Malibu. This involves pressing the accelerator pedal in a specific sequence. However, this method is unreliable and not officially supported by Chevrolet.

How It’s Supposed to Work

The steps typically involve:

• Turning the ignition to “on” (without starting).
• Pressing the gas pedal three times quickly.
• Turning the ignition off.
• Starting the engine.

Why It’s Not Recommended

• No official documentation: Chevrolet does not list this as a valid reset procedure.
• Inconsistent results: Many users report the light remains on after trying this method.
• Risk of confusion: It may lead you to believe the issue is fixed when it’s not.

We strongly advise against relying on this method. Use an OBD2 scanner or battery disconnect instead.

Troubleshooting Common Issues

Even after resetting the engine light, you may encounter problems. Here’s how to troubleshoot:

The Light Comes Back On Immediately

If the check engine light returns right after reset, the issue wasn’t fully resolved.

• Use an OBD2 scanner to read the new code.
• Check for loose connections, damaged sensors, or incomplete repairs.
• Ensure the gas cap is properly tightened and the seal is intact.

The Light Flashes While Driving

A flashing check engine light indicates a severe problem, such as a misfire that could damage the catalytic converter.

• Pull over safely and turn off the engine.
• Do not continue driving.
• Call a tow truck and have the vehicle inspected by a mechanic.

Other Dashboard Lights Are On

If multiple warning lights are illuminated (e.g., ABS, traction control), there may be a broader electrical issue.

• Check the fuse box for blown fuses.
• Inspect wiring for damage or corrosion.
• Consult a professional if you’re unsure.

The OBD2 Scanner Won’t Connect

If your scanner fails to communicate with the vehicle:

• Ensure the ignition is in the “on” position.
• Check that the OBD2 port is clean and undamaged.
• Try a different scanner or update the firmware.

Tips for Preventing Future Engine Light Issues

Once you’ve reset the engine light, take steps to avoid future problems:

• Regular maintenance: Follow the recommended service schedule for oil changes, spark plug replacements, and air filter changes.
• Use quality fuel: Low-quality gasoline can cause engine knocking and sensor issues.
• Inspect the gas cap: Make sure it’s tight and the seal is in good condition after every fill-up.
• Listen for unusual sounds: Rattling, knocking, or rough idling can signal engine problems.
• Monitor fuel efficiency: A sudden drop in mileage may indicate a sensor or emissions issue.

When to See a Mechanic

While many check engine light issues can be resolved at home, some require professional attention. Visit a certified mechanic if:

• The light is flashing.
• You’re unable to identify or fix the problem.
• The vehicle is running poorly, overheating, or making strange noises.
• You need a state emissions test and the light is on.

A mechanic has advanced diagnostic tools and expertise to handle complex issues safely.

Conclusion

Resetting the engine light on your 2017 Chevy Malibu doesn’t have to be intimidating. With the right tools and knowledge, you can diagnose the issue, fix the problem, and clear the light confidently. The OBD2 scanner method is the most reliable and recommended approach, while manual methods like battery disconnection should be used cautiously.

Remember, the check engine light is there to protect your vehicle. Always address the root cause before resetting it. Regular maintenance and attention to warning signs can keep your Malibu running smoothly for years to come.

By following this guide, you’ve taken a proactive step in maintaining your vehicle’s health. Stay informed, stay safe, and enjoy the peace of mind that comes with a well-cared-for car.