Volt How to Reset Check Engine Light

That’s why simply turning off the car won’t fix it. The light will likely come back within minutes or miles. The only way to truly reset it is to address the issue and then clear the code.

Tools You’ll Need to Reset the Check Engine Light

Before you begin, gather the right tools. Don’t worry—you don’t need a full garage setup. Here’s what you’ll need:

1. An OBD-II Scanner

This is the most important tool. An OBD-II scanner plugs into your Volt’s diagnostic port (usually under the dashboard near the steering column). It reads the trouble codes so you know what’s wrong. Some scanners can also reset the light directly.

Look for a bluetooth or Wi-Fi-enabled scanner if you want to use a smartphone app. Popular brands include:
– BlueDriver
– Autel MaxiCOM
– Innova 3010
– Foxwell NT510 Elite

2. A 12-Volt Battery Disconnect Tool (Optional)

This isn’t always reliable, but some people swear by it. It involves disconnecting the negative terminal of your 12-volt battery for 10–15 minutes. However, this method often doesn’t work on modern Volts because the systems stay powered even with the key off.

3. A Multimeter (For Troubleshooting)

If you suspect electrical issues, a multimeter can help test voltage levels in the battery or sensors.

4. A New Gas Cap (If Needed)

If the code points to the EVAP system, replacing the gas cap might solve the problem.

5. Access to a Computer or Smartphone (For Software Updates)

Some Volt models allow you to reset the light via the infotainment screen or a GM mobile app.

Now that you have your tools, let’s go through the reset process step by step.

Step-by-Step: How to Reset the Check Engine Light Using an OBD-II Scanner

This is the most accurate and recommended method. Here’s how to do it:

Step 1: Turn Off the Ignition

Make sure your Volt is completely off. Do not start the engine or put it in accessory mode. Press the power button twice to ensure it’s fully shut down.

Step 2: Locate the OBD-II Port

In most Volts, the OBD-II port is under the driver’s side dashboard, near the center console. It looks like a trapezoid-shaped connector with 16 pins. It’s usually near the steering column.

Step 3: Plug in the Scanner

Insert the OBD-II scanner into the port. Turn on the scanner (some auto-power on when plugged in).

Step 4: Connect to the Vehicle

If your scanner has Bluetooth or Wi-Fi, open the companion app on your phone or tablet. Follow the prompts to pair it with your Volt. Wait for it to connect—this may take 30 seconds to a minute.

Step 5: Read the Trouble Codes

Once connected, the scanner should display any active codes. For example:
– P0420 = Catalyst System Efficiency Below Threshold
– P0171 = System Too Lean (Bank 1)
– P0442 = Evap System Small Leak Detected

Write these down. They tell you exactly what’s wrong.

Step 6: Fix the Underlying Issue

Don’t skip this! If the code says “gas cap loose,” tighten it until you hear a click. If it’s a sensor issue, you may need to replace a part. For minor fixes, you can often do them yourself.

Step 7: Clear the Codes

On your scanner, look for a menu option like “Erase Codes” or “Clear DTCs.” Confirm the action. The check engine light should flash and then turn off.

Step 8: Drive the Car

Start the Volt and drive for 20–30 minutes. This allows the onboard computer to run a monitor check. If the issue was minor and fixed, the light should stay off.

💡 Tip: Some scanners offer a “ready monitor status” report. Check this to confirm all systems are functioning normally.

Alternative Method: Using the Infotainment System (2017+ Models)

Newer Chevy Volts (2017 and later) have more user-friendly systems. You can sometimes reset the check engine light through the touchscreen:

Step 1: Press the Home Button

Tap the home icon on the infotainment screen.

Step 2: Go to Settings

Select “Settings” > “Vehicle” > “Service.”

Step 3: Access Diagnostic Mode

Look for “Diagnostic Info” or “Check Engine Light Reset.” Note: This feature is limited and may not be available on all firmware versions.

Step 4: Follow On-Screen Prompts

Some screens may ask you to confirm clearing codes. Only proceed if you’ve already fixed the issue.

⚠️ Caution: This method isn’t always reliable. If it doesn’t work, use an OBD-II scanner instead.

Bypassing the Check Engine Light: Is It Safe?

Some people search for “volt how to reset check engine light” hoping to bypass it entirely—without fixing the problem. This is strongly discouraged.

Here’s why:

• The light exists to protect you and the environment.
• Ignoring it can lead to poor fuel economy, reduced performance, or damage to expensive components like the catalytic converter.
• In some states, failing an emissions test due to unresolved codes can result in fines.

If the light comes back right away after a reset, it means the issue wasn’t truly fixed. Keep driving with the light on is risky and potentially illegal.

Troubleshooting Common Issues

Even with the right tools, things can go wrong. Here’s how to handle common problems:

Problem 1: The Light Won’t Stay Off

Cause: The issue wasn’t fixed.
Fix: Re-read the codes. Address the root cause. For example, if the code is P0442 (small EVAP leak), replace the gas cap or inspect hoses.

Problem 2: Scanner Won’t Connect

Cause: Faulty cable, low battery, or incompatible device.
Fix: Try a different scanner. Make sure the car is off and the port is clean.

Problem 3: Multiple Codes Appear

Cause: Several systems are affected.
Fix: Prioritize codes starting with “P0” (generic) over “P1” (manufacturer-specific). Focus on safety-related ones first.

Problem 4: Light Flashes Instead of Stays On

Cause: Serious misfire or catalytic converter damage.
Fix: Stop driving immediately. This can cause severe engine damage. Call a tow truck.

When to See a Professional

While DIY fixes work for simple issues, some situations require expert help:

• The check engine light flashes rapidly
• You see other warning lights (e.g., battery, ABS, traction control)
• The car runs rough, stalls, or loses power
• You’re unsure what the code means
• You want a full diagnostic scan and repair estimate

Certified GM technicians have access to Techline Connect, a remote diagnostic system that can read deeper codes. They also understand Volt-specific issues like high-voltage battery degradation or inverter failures.

At a minimum, get the codes read before attempting a reset. That saves time and money.

Preventing Future Check Engine Lights

The best way to avoid the check engine light is prevention. Follow these tips:

• Replace spark plugs and wires every 30,000–100,000 miles (depending on type)
• Keep the gas cap tight—a loose cap triggers EVAP codes
• Use premium or mid-grade fuel when recommended
• Maintain the high-voltage battery with regular charging and software updates
• Address warning lights immediately—don’t wait
• Follow the maintenance schedule in your owner’s manual

Also, consider keeping a log of your Volt’s health. Note when the light comes on, what you were doing, and whether it returns. This helps spot patterns over time.

Final Thoughts: Reset the Light, Not the Problem

Remember, resetting the check engine light is only the final step. The real solution lies in understanding why it came on. Use an OBD-II scanner to read the codes, fix the issue, then reset the light.

For most drivers, a loose gas cap or worn spark plug is behind the warning. But for others, it could signal deeper hybrid system faults. Either way, knowledge empowers you to make smart decisions.

With this guide, you now know how to reset the check engine light on your Chevy Volt safely and effectively. You’ve learned the tools, steps, and red flags to watch for. And most importantly, you understand that prevention beats panic.

Driving a Volt is rewarding—clean, efficient, and fun. Keep it running smoothly by staying informed and proactive. When in doubt, scan it out.