This guide walks you through how to reset the check engine light on a 2013 Honda Ridgeline using simple methods like driving cycles, disconnecting the battery, or using an OBD2 scanner. Always diagnose the issue first to avoid recurring problems.
Key Takeaways
- Diagnose the problem first: The check engine light indicates an issue—use an OBD2 scanner to read the trouble code before resetting.
- Use a driving cycle: After fixing the issue, complete a specific driving pattern to allow the vehicle’s computer to clear the light automatically.
- Disconnect the battery: A 10–15 minute battery disconnect can reset the ECU and turn off the light, but may also reset radio and clock settings.
- OBD2 scanner is most reliable: A handheld scanner offers the safest, most accurate way to clear codes without side effects.
- Monitor for recurrence: If the light returns, the underlying issue hasn’t been resolved—seek professional diagnosis.
- Avoid quick fixes: Never ignore the light or use code-clearing tricks without addressing the root cause.
- Regular maintenance helps: Keep up with oil changes, air filters, and spark plugs to prevent future warnings.
How to Reset Check Engine Light on 2013 Honda Ridgeline
Seeing the check engine light pop up on your 2013 Honda Ridgeline dashboard can be stressful. It’s a warning that something in your vehicle’s engine or emissions system needs attention. While it’s tempting to just make the light disappear, the real goal should be understanding why it came on in the first place. Once you’ve identified and fixed the issue, resetting the light is the next logical step.
In this comprehensive guide, you’ll learn how to reset the check engine light on a 2013 Honda Ridgeline using safe, effective methods. We’ll cover everything from using an OBD2 scanner to disconnecting the battery and performing a driving cycle. You’ll also learn why simply clearing the code without fixing the problem is a bad idea. By the end, you’ll know exactly what to do—and what to avoid—to keep your Ridgeline running smoothly.
Why the Check Engine Light Comes On
Before you reset the light, it’s important to understand what it means. The check engine light—also known as the malfunction indicator lamp (MIL)—is part of your vehicle’s onboard diagnostics system (OBD2). When the engine control unit (ECU) detects a problem with the engine, transmission, or emissions system, it stores a trouble code and triggers the light.
Visual guide about How to Reset Check Engine Light on 2013 Honda Ridgeline
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Common causes in a 2013 Honda Ridgeline include:
- A loose or faulty gas cap
- Faulty oxygen (O2) sensor
- Misfiring spark plugs or ignition coils
- Mass airflow (MAF) sensor issues
- Catalytic converter problems
- Evaporative emissions (EVAP) system leaks
Some of these issues are minor and easy to fix, like tightening the gas cap. Others, like a failing catalytic converter, can be costly and require professional repair. That’s why diagnosing the problem is the first and most important step.
Step 1: Diagnose the Problem with an OBD2 Scanner
The best way to understand why your check engine light is on is to read the trouble code stored in the ECU. You’ll need an OBD2 scanner for this. Most auto parts stores (like AutoZone or O’Reilly) offer free code reading, or you can buy an affordable scanner online or at a local store.
How to Use an OBD2 Scanner
Follow these steps to read the code:
- Locate the OBD2 port: In the 2013 Honda Ridgeline, the OBD2 port is usually under the dashboard on the driver’s side, near the steering column. It’s a 16-pin connector that looks like a trapezoid.
- Turn off the ignition: Make sure the key is in the “off” position before plugging in the scanner.
- Plug in the scanner: Insert the OBD2 scanner into the port. Most scanners will power on automatically when the ignition is turned to “on” (without starting the engine).
- Turn the ignition to “on”: Do not start the engine—just turn the key to the second position (accessory mode).
- Follow scanner instructions: Press the “scan” or “read” button on the device. It will retrieve the trouble code(s) from the ECU.
- Record the code: The scanner will display a code like “P0420” or “P0171.” Write it down or take a photo.
Understanding the Code
Trouble codes follow a standard format: a letter followed by four digits. The letter indicates the system:
- P = Powertrain (engine and transmission)
- B = Body (airbags, climate control, etc.)
- C = Chassis (ABS, suspension)
- U = Network (communication between modules)
For example, “P0420” means “Catalyst System Efficiency Below Threshold (Bank 1),” which often points to a failing catalytic converter. “P0171” means “System Too Lean (Bank 1),” which could be due to a vacuum leak or faulty MAF sensor.
Use a free online code lookup tool (like those on OBD-Codes.com) or your scanner’s built-in database to interpret the code. This will help you determine the next steps—whether it’s a simple fix or something that needs a mechanic.
Step 2: Fix the Underlying Issue
Resetting the check engine light without fixing the problem is like turning off a smoke alarm while your house is on fire. The light will likely come back on, and you could cause further damage to your vehicle.
Here are some common fixes based on typical codes:
Gas Cap Issues (Code P0455 or P0457)
A loose, damaged, or missing gas cap is one of the most common reasons for the check engine light. The EVAP system monitors fuel vapor leaks, and a bad cap can trigger a code.
How to fix it:
- Turn off the engine and let the vehicle cool.
- Open the fuel door and remove the gas cap.
- Inspect the cap for cracks, worn seals, or damage.
- Tighten the cap until it clicks 3–5 times.
- If the cap is damaged, replace it with an OEM or high-quality aftermarket cap.
After tightening or replacing the cap, drive the vehicle for a few days. The light may turn off on its own after a few drive cycles.
Oxygen Sensor Problems (Code P0135, P0141, etc.)
The O2 sensors monitor oxygen levels in the exhaust to help the ECU adjust the air-fuel mixture. A faulty sensor can reduce fuel efficiency and increase emissions.
How to fix it:
- Locate the faulty sensor (usually in the exhaust manifold or downpipe).
- Disconnect the electrical connector.
- Use an O2 sensor socket to remove the old sensor.
- Install the new sensor and reconnect the wiring.
- Clear the code and test drive.
O2 sensors are relatively inexpensive (around $50–$150) and can be replaced with basic tools. However, if you’re not comfortable working near hot exhaust parts, consider hiring a mechanic.
Spark Plug or Ignition Coil Issues (Code P0300–P0306)
Misfires occur when one or more cylinders fail to ignite properly. This can be due to worn spark plugs or faulty ignition coils.
How to fix it:
- Check the spark plugs for wear, carbon buildup, or gaps.
- Replace spark plugs if they’re over 60,000–100,000 miles old.
- Test ignition coils with a multimeter or swap coils between cylinders to see if the misfire follows.
- Replace any faulty coils.
Spark plug replacement is a common maintenance task. Use a torque wrench to avoid over-tightening, which can damage the threads in the cylinder head.
Mass Airflow Sensor (MAF) Issues (Code P0101, P0102, P0103)
The MAF sensor measures how much air enters the engine. A dirty or faulty sensor can cause poor performance and reduced fuel economy.
How to fix it:
- Locate the MAF sensor (usually between the air filter box and throttle body).
- Disconnect the electrical connector.
- Remove the sensor using a screwdriver or socket.
- Clean it with MAF sensor cleaner (do not use compressed air or regular cleaners).
- Reinstall and reconnect.
If cleaning doesn’t help, replace the sensor. OEM sensors are more reliable than cheap aftermarket ones.
Step 3: Reset the Check Engine Light
Once the issue is fixed, you can reset the check engine light. There are three main methods: using a driving cycle, disconnecting the battery, or using an OBD2 scanner. Each has pros and cons.
Method 1: Use a Driving Cycle (Automatic Reset)
The 2013 Honda Ridgeline’s ECU will automatically clear the check engine light after a certain number of “drive cycles” if no faults are detected. A drive cycle is a specific pattern of driving that allows the vehicle to test all emissions systems.
Recommended driving cycle for Honda Ridgeline:
- Start the engine and let it idle for 2–3 minutes (cold start).
- Drive at 30–40 mph for 3–5 minutes.
- Accelerate to 55–60 mph and maintain speed for 5–10 minutes.
- Decelerate to 20 mph without braking hard.
- Repeat the cycle 2–3 times.
- End with a 5-minute idle.
This process typically takes 30–45 minutes. After completing the cycle, turn off the vehicle and wait 10 minutes. Start it again—the light should be off.
Tip: Avoid short trips and stop-and-go traffic during the drive cycle. The ECU needs steady speeds to complete its tests.
Method 2: Disconnect the Battery
Disconnecting the battery resets the ECU by cutting power to the system. This clears stored codes and turns off the check engine light. However, it also resets other settings like the radio presets, clock, and adaptive transmission learning.
Steps to disconnect the battery:
- Turn off the ignition and remove the key.
- Open the hood and locate the battery (on the driver’s side).
- Use a 10mm wrench to loosen the negative (-) terminal clamp.
- Remove the negative cable and tuck it away from the battery.
- Wait 10–15 minutes. This allows the ECU’s capacitors to discharge.
- Reconnect the negative cable and tighten the clamp.
- Start the vehicle and check if the light is off.
Note: In some cases, the light may take a few drive cycles to clear even after battery reset. Also, you may need to relearn the idle speed by idling for 5–10 minutes after reconnection.
Method 3: Use an OBD2 Scanner (Recommended)
The most reliable and safest way to reset the check engine light is with an OBD2 scanner. This method clears the codes without affecting other systems.
Steps to clear codes with a scanner:
- Plug the scanner into the OBD2 port.
- Turn the ignition to “on” (do not start the engine).
- Navigate to the “Clear Codes” or “Erase DTCs” option on the scanner.
- Confirm the action when prompted.
- The scanner will erase all stored trouble codes.
- Turn off the ignition and unplug the scanner.
- Start the vehicle—the check engine light should be off.
Tip: Some scanners also allow you to view live data, freeze frame data, and monitor readiness status. This helps confirm the repair was successful.
Troubleshooting Common Issues
Sometimes, the check engine light doesn’t turn off—or it comes back on shortly after resetting. Here’s how to troubleshoot:
Light Comes Back On After Reset
If the light returns, the underlying issue hasn’t been fixed. Re-scan for codes and double-check your repair. For example, if you replaced a spark plug but the misfire persists, the ignition coil might be faulty.
Light Won’t Clear After Driving Cycle
If the driving cycle doesn’t work, the ECU may not have completed all readiness monitors. Ensure you follow the cycle exactly. Some monitors require specific conditions (like cold starts or highway speeds).
Battery Reset Didn’t Work
If disconnecting the battery didn’t clear the light, the ECU may have non-volatile memory that retains codes. Use an OBD2 scanner instead.
Scanner Says “No Communication”
If the scanner can’t connect, check the OBD2 port for dirt or damage. Also, ensure the ignition is on. If the problem persists, there may be an electrical issue with the ECU or wiring.
Preventing Future Check Engine Lights
The best way to avoid check engine lights is through regular maintenance. Here are some tips for your 2013 Honda Ridgeline:
- Replace spark plugs every 60,000–100,000 miles.
- Change the air filter every 15,000–30,000 miles.
- Use high-quality fuel and consider fuel system cleaners occasionally.
- Inspect the gas cap regularly and replace if worn.
- Keep the engine clean to prevent sensor contamination.
- Address warning lights promptly—don’t ignore them.
Also, consider keeping an OBD2 scanner in your glove box. It’s a small investment (around $20–$50) that can save you time and money by helping you diagnose issues early.
When to See a Mechanic
While many check engine light issues can be handled at home, some require professional help. See a mechanic if:
- The light is flashing (indicates a severe misfire that can damage the catalytic converter).
- You’re unsure how to interpret or fix the code.
- The repair involves complex components like the transmission or fuel injectors.
- The light keeps coming back despite repairs.
- You notice performance issues like rough idle, stalling, or loss of power.
A certified Honda technician has access to advanced diagnostic tools and service bulletins that can pinpoint rare or complex issues.
Conclusion
Resetting the check engine light on your 2013 Honda Ridgeline is straightforward once you understand the process. Start by diagnosing the problem with an OBD2 scanner, fix the underlying issue, and then reset the light using a driving cycle, battery disconnect, or scanner. The OBD2 method is the most reliable and recommended for most users.
Remember, the check engine light is your vehicle’s way of asking for help. Ignoring it can lead to bigger problems and higher repair bills. By following this guide, you’ll not only clear the light but also keep your Ridgeline running efficiently for years to come.
Stay proactive with maintenance, keep a scanner handy, and don’t hesitate to seek professional help when needed. Your truck will thank you with smooth rides and fewer surprises on the road.