Your 2013 Chevy Cruze engine light is flashing or steady? Don’t panic—this guide helps you understand why the light came on and how to turn it off safely. You’ll learn simple reset tricks, when to drive, and when to seek professional help to keep your car running smoothly.
Your 2013 Chevy Cruze engine light has come on, and now you’re wondering what to do next. The check engine light—sometimes called the malfunction indicator lamp (MIL)—is your car’s way of saying, “Hey, something isn’t right.” But don’t worry: this guide will walk you through exactly how to turn off engine light on 2013 Chevy Cruze in a safe, step-by-step way.
You’ll learn what causes the light to come on, how to diagnose the issue, and the best methods to clear the code so the light turns off. We’ll also cover when it’s okay to drive and when you should call a mechanic. By the end, you’ll feel confident handling your Cruze’s engine light like a pro.
Before we dive in, remember: turning off the engine light isn’t always as simple as pressing a button. Sometimes, the light comes back until the real problem is fixed. So while we’ll show you how to clear the code, we’ll also explain why it matters and how to avoid future warnings.
Let’s get started!
Why Is My Engine Light On?
The engine light on your 2013 Chevy Cruze can come on for many reasons. Some are minor, like a loose gas cap. Others are serious, like a failing oxygen sensor or engine misfire. Understanding the difference helps you decide whether to drive or pull over.
Common causes include:
– Loose or damaged gas cap
– Faulty oxygen sensor
– Worn spark plugs or ignition coils
– Mass airflow (MAF) sensor issues
– Catalytic converter problems
– Exhaust gas recirculation (EGR) valve failure
– Low fuel level or bad fuel quality
– Loose wiring or poor connections
Most of these issues won’t stop your Cruze from running, but they can hurt fuel economy or emissions. A flashing engine light, however, means there’s a severe misfire. Driving with a blinking light risks damaging the catalytic converter, which is expensive to replace.
So, the first step is to figure out why the light came on. That leads us to using an OBD2 scanner.
Step 1: Use an OBD2 Scanner to Read the Code
The best way to find out why your engine light is on is with an OBD2 scanner. This small device plugs into your Cruze’s diagnostic port and reads trouble codes stored in the computer.
What You’ll Need
– OBD2 scanner (budget models start under $50)
– Your Cruze’s owner’s manual (optional but helpful)
How to Connect the Scanner
1. Turn off the engine.
2. Locate the OBD2 port under the dashboard on the driver’s side.
3. Plug the scanner into the port.
4. Turn the ignition to the “ON” position (don’t start the engine).
5. Wait for the scanner to power up.
6. Follow the screen prompts to read codes.
The scanner will display a code like P0300 (random misfire) or P0420 (catalyst efficiency below threshold). Write down the code—it tells you exactly what’s wrong.
If you don’t own a scanner, many auto parts stores (like AutoZone or O’Reilly) offer free code reading if you bring in your vehicle. Just ask for help at the counter.
Step 2: Check the Gas Cap First
One of the easiest fixes for a 2013 Chevy Cruze engine light is a loose or damaged gas cap. The Cruze has a sealed fuel system, and if the cap isn’t tight, it can trigger a vapor leak detection code (usually P0455 or P0457).
How to Inspect and Tighten the Gas Cap
1. Park on a flat surface and turn off the engine.
2. Open the fuel door.
3. Remove the gas cap by twisting it counterclockwise.
4. Look for cracks, wear, or dirt around the seal.
5. Screw the cap back on firmly—until it clicks twice.
6. Close the fuel door.
After tightening, wait 10–15 minutes. Drive your Cruze for about 20–30 miles at highway speeds. This helps the onboard system relearn the fuel system seals. Then, use your OBD2 scanner again to clear the code. If the light stays off, you’ve solved the problem.
If the cap is cracked or worn, replace it with a genuine GM part (part number usually starts with 19208537 or 19208538).
Step 3: Clear the Code with Your OBD2 Scanner
Once you’ve identified and possibly fixed the issue, it’s time to clear the engine light. Most OBD2 scanners let you erase codes easily.
How to Clear the Code
1. With the scanner still connected, go to the “Clear Codes” or “Erase DTCs” menu.
2. Confirm the action when prompted.
3. Turn off the scanner and unplug it.
4. Start your Cruze and test drive it briefly.
The engine light should turn off within a few seconds. However, if the underlying problem remains, the light will come back after a few drive cycles.
Step 4: Drive and Monitor the Light
After clearing the code, take your Cruze for a short drive—especially on highways where steady speeds help the computer reset. Avoid heavy city traffic or stop-and-go driving during this phase.
Watch the dashboard:
– If the light stays off and your Cruze runs normally, the problem may be resolved.
– If the light returns quickly, there’s likely a deeper issue.
Also pay attention to performance:
– Rough idle
– Loss of power
– Poor fuel economy
– Strange noises
Any of these could mean the fault wasn’t fully fixed. In that case, revisit the OBD2 scanner to see if new codes appeared.
Step 5: Address Underlying Issues (If Needed)
Clearing the code is only half the job. To prevent the engine light from coming back, you must fix the root cause.
For example:
– If the code was P0420 (catalyst efficiency), you might need a new oxygen sensor or catalytic converter.
– If it was P0301 (cylinder 1 misfire), inspect spark plugs and ignition coils.
– For P0171 (system too lean), check the mass airflow sensor and vacuum leaks.
Use your scanner regularly to catch issues early. Many modern OBD2 tools even offer live data readings, so you can monitor sensor performance in real time.
Troubleshooting Common Problems
Even with careful maintenance, issues can pop up. Here’s how to handle some frequent scenarios on the 2013 Chevy Cruze.
Light Comes Back After a Few Days
This usually means the problem wasn’t fully resolved. Recheck with your OBD2 scanner. If a new code appears, research it online or consult a mechanic.
Engine Runs Rough or Loses Power
A misfire or sensor failure can affect performance. Pull over safely if you notice shaking or hesitation. Don’t drive far—get help.
Scanner Shows No Codes
Sometimes the engine light turns off on its own after a few drive cycles. This happens when the onboard system confirms the fault is no longer present. Still, if the light was on earlier, have a mechanic inspect the vehicle to be sure.
Flashing Engine Light
This is urgent. A blinking MIL indicates a severe misfire that can melt your catalytic converter. Stop driving immediately and call for roadside assistance.
When to See a Mechanic
While many engine light issues are DIY-friendly, some require professional attention. Call a trusted mechanic if:
– The light flashes or comes back within hours
– Your Cruze hesitates, stalls, or won’t start
– You smell burning or see smoke
– Fuel economy drops dramatically
– Multiple warning lights appear (e.g., battery, oil, ABS)
A certified technician can perform advanced diagnostics, such as checking compression, inspecting wiring, or testing sensors with specialized tools.
Preventative Tips to Keep Your Engine Light Off
Avoid future engine lights by following these habits:
– Tighten your gas cap every time you fill up
– Replace spark plugs and wires as recommended (every 60,000–100,000 miles)
– Use high-quality fuel (premium if required)
– Keep up with scheduled maintenance (oil changes, air filters, etc.)
– Clean the throttle body and MAF sensor annually
– Avoid long periods of idling
These small steps go a long way in keeping your 2013 Chevy Cruze running clean and efficient.
Final Thoughts
Turning off the engine light on your 2013 Chevy Cruze doesn’t have to be stressful. With the right tools and approach, you can diagnose and fix most issues yourself. Always start with the OBD2 scanner to read the code, check the gas cap, and clear the fault. But remember: clearing the code is just the first step. Fixing the underlying problem ensures the light stays off for good.
If you’re ever unsure—especially with a flashing light or poor performance—don’t risk it. A quick trip to the mechanic can save you thousands in repairs.
Stay proactive, stay informed, and your Cruze will reward you with smooth rides and reliable performance for years to come.