This guide walks you through how to check the engine light on a 2013 Mazda 5 using simple tools and methods. You’ll learn to read error codes, understand common causes, and decide when to seek professional help—all from your garage.
Key Takeaways
- Understand the check engine light: It signals a problem detected by your vehicle’s onboard diagnostics system and should never be ignored.
- Use an OBD2 scanner: This is the most reliable way to read diagnostic trouble codes (DTCs) from your 2013 Mazda 5.
- Locate the OBD2 port: It’s usually under the dashboard near the driver’s side, making it easy to access.
- Interpret error codes correctly: Codes like P0420 or P0301 point to specific issues like catalytic converter or misfire problems.
- Reset the light safely: After repairs, use the scanner to clear codes and verify the fix worked.
- Know when to call a mechanic: Some issues require professional diagnosis and repair, especially if the light flashes or returns quickly.
- Maintain your vehicle regularly: Prevent future engine light triggers with routine maintenance like oil changes and spark plug replacements.
How to Check Engine Light on 2013 Mazda 5: A Complete 2026 Guide
If you own a 2013 Mazda 5, you know it’s a reliable, family-friendly minivan with great fuel economy and a smooth ride. But like any vehicle, it can develop issues over time—and one of the first signs something might be wrong is the dreaded check engine light. In 2026, with older vehicles still on the road, understanding how to respond when that light comes on is more important than ever.
This comprehensive guide will walk you through exactly how to check the engine light on a 2013 Mazda 5. Whether you’re a DIY enthusiast or just want to be informed before visiting a mechanic, you’ll learn how to read error codes, understand what they mean, and take the right next steps. We’ll cover everything from locating your diagnostic port to interpreting trouble codes and knowing when professional help is needed.
By the end of this guide, you’ll feel confident handling the check engine light—no panic, no guesswork, just clear, practical advice tailored to your Mazda 5.
Why the Check Engine Light Comes On
Visual guide about How to Check Engine Light on 2013 Mazda 5
Image source: cimg6.ibsrv.net
Before diving into the steps, it’s important to understand what the check engine light actually means. Contrary to popular belief, it doesn’t always mean your engine is about to explode. In fact, it’s part of your vehicle’s onboard diagnostics system (OBD2), which monitors engine performance, emissions, and other critical systems.
When a sensor detects an anomaly—like a misfire, low fuel pressure, or a faulty oxygen sensor—the system logs a diagnostic trouble code (DTC) and triggers the check engine light on your dashboard. The light can appear in two ways:
– Solid (steady) light: Indicates a less urgent issue, such as a loose gas cap or minor emissions problem.
– Flashing light: Signals a serious problem, like a severe engine misfire that could damage the catalytic converter. If this happens, pull over safely and call for help.
In your 2013 Mazda 5, the OBD2 system is fully compliant with modern standards, meaning it can detect a wide range of issues. The key is responding quickly and correctly—not ignoring it, but also not panicking.
Tools You’ll Need
To check the engine light on your 2013 Mazda 5, you don’t need a mechanic’s toolbox. Just a few simple items:
- OBD2 scanner: This is the most important tool. It plugs into your car’s diagnostic port and reads the trouble codes. You can buy a basic model for under $30 or use a smartphone app with a Bluetooth adapter.
- Smartphone or tablet (optional): If using a Bluetooth OBD2 scanner, you’ll need a device to run the app.
- Flashlight: Helps you see under the dashboard when locating the OBD2 port.
- Owner’s manual: Useful for confirming port location and understanding dashboard symbols.
You don’t need advanced mechanical skills—just a willingness to follow steps and pay attention to details.
Step 1: Locate the OBD2 Port
The first step in checking your engine light is finding the OBD2 port. This is where your scanner connects to communicate with the car’s computer.
Where to Look
In the 2013 Mazda 5, the OBD2 port is typically located under the dashboard on the driver’s side. It’s usually within arm’s reach when you’re sitting in the driver’s seat.
To find it:
- Sit in the driver’s seat and look down near the steering column.
- You’re looking for a 16-pin connector—rectangular, about the size of a small pack of gum.
- It’s often tucked just above the brake pedal or behind a small panel.
If you can’t see it right away, use your flashlight to scan the area. Some owners report it being slightly hidden behind a plastic cover. Gently pull or pry it open if needed—most are designed to snap off easily.
Confirming the Port
The OBD2 port has a standard shape and pin layout. If you’re unsure, compare it to images online or check your owner’s manual. The manual for the 2013 Mazda 5 clearly labels the location in the “Instrument Panel” section.
Pro tip: If you plan to use the scanner regularly, consider leaving a small flashlight or the scanner itself in the glove box for quick access.
Step 2: Connect the OBD2 Scanner
Once you’ve found the port, it’s time to plug in your scanner.
Turn Off the Engine
Before connecting anything, make sure the engine is off. This prevents any electrical issues and ensures a clean connection.
Plug In the Scanner
Take your OBD2 scanner and insert it firmly into the port. It should click in place. If it doesn’t go in easily, don’t force it—double-check the orientation. The connector is keyed, meaning it only fits one way.
Turn the Ignition to “On”
You don’t need to start the engine, but you do need power. Turn the key to the “ON” position (or press the start button without pressing the brake). This powers up the car’s electronics and allows the scanner to communicate with the computer.
You should see lights on the scanner turn on. If it has a screen, it may display “Searching” or “Connecting.”
Wait for Connection
Give the scanner 10–30 seconds to establish a link with the vehicle’s computer. Some scanners connect instantly; others take a moment, especially if it’s the first time.
If nothing happens, try unplugging and reinserting the scanner. Also, check that the ignition is truly in the “ON” position—not just accessory mode.
Step 3: Read the Diagnostic Trouble Codes (DTCs)
Now comes the most important part: reading the codes.
Follow the Scanner’s Instructions
Most basic OBD2 scanners have a simple menu. Look for options like:
- “Read Codes”
- “Get DTCs”
- “Scan”
Press the corresponding button. The scanner will retrieve any stored trouble codes from the vehicle’s computer.
Write Down the Codes
The scanner will display one or more codes, usually in the format “P0XXX” (e.g., P0420, P0301). These are standardized across all vehicles, so they mean the same thing whether you drive a Mazda, Toyota, or Ford.
Write down each code exactly as shown. Even if the scanner gives a brief description, it’s best to record the full code for accurate research.
Example Codes in a 2013 Mazda 5
Here are a few common codes you might see in your Mazda 5:
- P0420: Catalyst system efficiency below threshold (usually a failing catalytic converter).
- P0301: Cylinder 1 misfire detected.
- P0171: System too lean (bank 1)—could be a vacuum leak or faulty oxygen sensor.
- P0455: Large evaporative emission leak—often a loose or damaged gas cap.
Don’t panic if you see a code. Many are fixable with simple repairs.
Step 4: Interpret the Codes
Now that you have the codes, it’s time to understand what they mean.
Use Online Resources
The easiest way to interpret codes is to search them online. Reliable sources include:
- OBD-Codes.com
- RepairPal.com
- YourMechanic.com
Type in the full code (e.g., “P0420 meaning”) and read the explanation. These sites break down the issue, possible causes, and estimated repair costs.
Understand the Severity
Not all codes are equal. Some are minor, like a loose gas cap (P0455), which you can fix in seconds. Others, like a misfire (P0301), may require replacing spark plugs or ignition coils.
Use this rule of thumb:
- Codes starting with P0: Generic powertrain issues (most common).
- Codes starting with P1: Manufacturer-specific issues (less common in OBD2).
- Codes with “U” or “B”: Network or body system issues (less likely in engine light cases).
Check for Pending vs. Confirmed Codes
Some scanners show both “pending” and “confirmed” codes. Pending codes are temporary and may disappear if the issue doesn’t recur. Confirmed codes are more serious and likely to trigger the light again.
If you only see pending codes, try clearing them and driving for a few days to see if they return.
Step 5: Address the Issue
Once you know what the code means, decide how to proceed.
Simple Fixes You Can Do Yourself
Some problems are easy to fix at home:
- Loose gas cap: Tighten it or replace it if cracked. This is the #1 cause of false check engine lights.
- Dirty air filter: Replace it if clogged—improves performance and fuel economy.
- Faulty oxygen sensor: If it’s a front sensor, you may be able to replace it yourself with basic tools.
Always consult your owner’s manual or a repair guide for your Mazda 5 before attempting repairs.
When to Call a Mechanic
Some issues require professional attention:
- Engine misfires: Could be spark plugs, coils, or fuel injectors—best diagnosed by a pro.
- Catalytic converter failure: Expensive to replace and often needs specialized tools.
- Transmission or emissions system problems: Complex systems that need expert diagnosis.
If the light is flashing, or if you’re unsure about the repair, don’t risk further damage. Call a trusted mechanic.
Step 6: Clear the Codes and Reset the Light
After fixing the issue, you’ll want to clear the codes and turn off the check engine light.
Use the Scanner to Clear Codes
Most OBD2 scanners 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 system.
Wait for Confirmation
The scanner should display a message like “Codes cleared” or “Reset successful.” The check engine light on your dashboard should turn off within a few seconds.
Drive and Monitor
Take your Mazda 5 for a short drive—10 to 15 minutes—to allow the computer to run its self-tests. If the light stays off, the problem is likely resolved. If it comes back, the issue may still exist or a new one has developed.
Don’t Just Clear Without Fixing
Never clear codes without addressing the root cause. The light will almost certainly return, and you could miss a serious problem.
Troubleshooting Common Issues
Even with the right tools, you might run into problems. Here’s how to handle them.
Scanner Won’t Connect
If your OBD2 scanner won’t connect:
- Check that the ignition is in the “ON” position.
- Ensure the scanner is fully inserted.
- Try a different scanner or app.
- Inspect the OBD2 port for dirt or damage—clean it gently with compressed air.
No Codes Found, But Light Is On
This is rare but possible. It could mean:
- The light was triggered by a temporary glitch.
- The scanner isn’t reading properly.
- The issue is intermittent.
Try clearing the light and driving for a few days. If it returns, recheck with the scanner.
Multiple Codes Appear
Sometimes, one problem triggers others. For example, a misfire (P0301) can lead to a catalytic converter code (P0420). Focus on the root cause first—fix the misfire, and the other code may clear on its own.
Light Comes Back After Clearing
If the light returns quickly, the issue wasn’t fully resolved. Recheck the codes and consider professional diagnosis.
Preventing Future Check Engine Light Issues
The best way to deal with the check engine light is to avoid it altogether. Regular maintenance goes a long way.
Follow the Maintenance Schedule
Your 2013 Mazda 5 has a recommended maintenance schedule in the owner’s manual. Stick to it:
- Change oil every 5,000–7,500 miles.
- Replace spark plugs every 60,000–100,000 miles.
- Inspect air and fuel filters annually.
- Check tire pressure and alignment regularly.
Use Quality Fuel and Fluids
Low-quality gas or old engine oil can trigger sensors. Use top-tier fuel and manufacturer-recommended oil.
Don’t Ignore Small Issues
A rough idle, reduced fuel economy, or unusual noises can be early signs of trouble. Address them before they trigger the check engine light.
Keep the Gas Cap Tight
After every fill-up, make sure the gas cap is securely tightened. A loose cap is one of the most common—and easiest—causes of the check engine light.
Conclusion
Checking the engine light on your 2013 Mazda 5 doesn’t have to be stressful. With an OBD2 scanner and a few simple steps, you can read error codes, understand what they mean, and take action—whether that’s tightening a gas cap or calling a mechanic.
In 2026, as older vehicles like the Mazda 5 continue to serve families and commuters, knowing how to respond to warning lights is a valuable skill. You’re not just saving money on diagnostics—you’re staying safe and keeping your vehicle running smoothly.
Remember: the check engine light is your car’s way of saying, “Hey, something’s up.” Listen to it, investigate it, and act wisely. With this guide, you’re equipped to do just that.