Resetting the check engine light on a 2016 Dodge Journey is possible after fixing the underlying issue. This guide walks you through safe methods, including using an OBD2 scanner, disconnecting the battery, and driving cycles, so you can clear the light with confidence.
Key Takeaways
- Always diagnose the problem first: Never reset the light without identifying and fixing the root cause using an OBD2 scanner or professional scan tool.
- Use an OBD2 scanner for best results: This is the safest and most effective method to clear trouble codes and reset the check engine light.
- Battery disconnection is a temporary fix: While it may reset the light, it also erases ECU memory and may not work if the issue persists.
- Drive cycles may be required: After resetting, your vehicle may need several driving cycles for the system to verify repairs and prevent the light from returning.
- Avoid cheap or unreliable tools: Invest in a quality OBD2 scanner compatible with your 2016 Dodge Journey for accurate readings and resets.
- Monitor the light after reset: If it returns, the problem is likely unresolved and requires further diagnosis.
- Consult a mechanic if unsure: Complex issues like catalytic converter or oxygen sensor problems should be handled by a professional.
How to Reset Check Engine Light on 2016 Dodge Journey
If you’ve noticed the dreaded check engine light glowing on your 2016 Dodge Journey dashboard, you’re not alone. This warning indicator is designed to alert you to potential issues with your vehicle’s engine, emissions system, or onboard diagnostics. While it can be alarming, the good news is that once you’ve identified and fixed the underlying problem, you can reset the light and restore peace of mind.
In this comprehensive guide, we’ll walk you through how to reset the check engine light on a 2016 Dodge Journey using safe, proven methods. Whether you’re a DIY enthusiast or just want to understand your vehicle better, this step-by-step tutorial will help you clear the light correctly—without causing further damage or triggering new issues. We’ll cover everything from diagnosing the problem to choosing the right tools and avoiding common mistakes.
Why the Check Engine Light Comes On
Before jumping into the reset process, it’s important to understand why the check engine light illuminates in the first place. The 2016 Dodge Journey is equipped with an advanced onboard diagnostics system (OBD2), which continuously monitors engine performance, fuel efficiency, emissions, and various sensors.
Visual guide about How to Reset Check Engine Light on 2016 Dodge Journey
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The light can be triggered by a wide range of issues, from minor to serious. Some common causes include:
- A loose or faulty gas cap
- Faulty oxygen (O2) sensor
- Misfiring engine cylinders
- Catalytic converter problems
- Mass airflow (MAF) sensor issues
- Exhaust gas recirculation (EGR) valve malfunction
- Spark plug or ignition coil failure
Ignoring the light—or resetting it without fixing the root cause—can lead to decreased fuel efficiency, increased emissions, and even engine damage over time. That’s why diagnosis should always come before reset.
Tools You’ll Need
To safely and effectively reset the check engine light on your 2016 Dodge Journey, you’ll need a few basic tools. Here’s what we recommend:
- OBD2 Scanner: This is the most reliable tool for reading and clearing trouble codes. Look for a scanner compatible with your vehicle’s make and model. Budget-friendly options like the BlueDriver or Ancel AD310 work well.
- Owner’s Manual: Your Dodge Journey manual contains valuable information about dashboard indicators and maintenance procedures.
- Basic Hand Tools: A wrench or socket set may be needed if you’re inspecting components like the gas cap or air filter.
- Clean Cloth or Rag: Useful for cleaning connections or wiping down parts.
- Safety Gloves and Glasses: Always prioritize safety when working under the hood.
While some people attempt to reset the light by simply disconnecting the battery, we strongly recommend using an OBD2 scanner. It’s faster, safer, and ensures you’re not missing critical diagnostic information.
Step-by-Step Guide to Reset the Check Engine Light
Now that you understand the basics, let’s dive into the actual process. Follow these steps carefully to reset the check engine light on your 2016 Dodge Journey.
Step 1: Diagnose the Problem
Before resetting the light, you must identify what caused it to come on. Skipping this step is like turning off a fire alarm while the house is still burning—it doesn’t solve the problem.
Start by connecting your OBD2 scanner to the vehicle’s diagnostic port. This port is typically located under the dashboard, near the driver’s side knee panel. It’s a 16-pin connector, usually black or gray, and easy to spot once you know where to look.
Turn the ignition to the “ON” position (but don’t start the engine). Power on your scanner and follow the on-screen prompts to read the trouble codes. The scanner will display one or more Diagnostic Trouble Codes (DTCs), such as P0455 (large EVAP leak) or P0302 (cylinder 2 misfire).
Write down the codes and use the scanner’s built-in database or an online resource like OBD-Codes.com to interpret them. This will help you understand what part of the system is malfunctioning.
For example, if the code points to a loose gas cap, tighten it and see if the light goes off after a few drives. If it’s a sensor issue, you may need to replace the component before resetting.
Step 2: Fix the Underlying Issue
Once you’ve identified the problem, take the necessary steps to fix it. This might involve:
- Tightening or replacing the gas cap
- Cleaning or replacing the mass airflow sensor
- Replacing a faulty oxygen sensor
- Swapping out spark plugs or ignition coils
- Repairing vacuum leaks
Some fixes are simple and can be done at home with basic tools. Others, like catalytic converter replacement, are complex and best left to a certified mechanic.
After completing the repair, double-check all connections and ensure everything is properly installed. A loose wire or improperly seated sensor can trigger the light again.
Step 3: Use an OBD2 Scanner to Clear the Codes
With the issue resolved, it’s time to reset the check engine light. The most effective and recommended method is using your OBD2 scanner.
Reconnect the scanner to the diagnostic port and turn the ignition to “ON.” Navigate to the “Clear Codes” or “Erase DTCs” option on the scanner’s menu. Confirm the action when prompted.
The scanner will send a command to the vehicle’s Engine Control Unit (ECU) to delete the stored trouble codes. Within seconds, the check engine light should turn off.
Some scanners also allow you to view live data or perform system tests. This can be helpful to confirm that the repair was successful and that all sensors are functioning properly.
Note: If the light doesn’t turn off immediately, don’t panic. In some cases, it may take a short drive (5–10 minutes) for the system to recognize the change.
Step 4: Drive the Vehicle to Complete Drive Cycles
After clearing the codes, your 2016 Dodge Journey may need to complete one or more “drive cycles” to fully reset the onboard monitoring system. A drive cycle is a specific pattern of driving that allows the ECU to test various components and ensure they’re working correctly.
While the exact drive cycle varies by model, a typical sequence includes:
- Start the engine and let it idle for 2–3 minutes (cold start)
- Drive at a steady speed of 30–40 mph for 5–10 minutes
- Accelerate to 55–65 mph and maintain speed for several minutes
- Decelerate gradually without braking hard
- Repeat the cycle 2–3 times over the course of a day
During this process, the ECU will run self-tests on systems like the evaporative emissions (EVAP), oxygen sensors, and catalytic converter. If all tests pass, the vehicle will be considered “ready” for emissions inspection.
If the check engine light returns after completing drive cycles, the problem may not be fully resolved. Recheck the trouble codes and consider professional diagnosis.
Alternative Method: Disconnecting the Battery
If you don’t have access to an OBD2 scanner, you can try resetting the check engine light by disconnecting the vehicle’s battery. However, this method has limitations and is not always effective.
How to Disconnect the Battery
Follow these steps carefully:
- Turn off the engine and remove the key from the ignition.
- Open the hood and locate the battery (usually on the driver’s side).
- Use a wrench to loosen the negative (-) terminal clamp.
- Remove the negative cable and secure it away from the battery post.
- Wait at least 15–30 minutes. This allows the ECU to lose power and reset.
- Reconnect the negative cable and tighten the clamp securely.
- Close the hood and start the vehicle.
After reconnecting the battery, the check engine light may turn off temporarily. However, if the underlying issue still exists, the light will likely return within a few drives.
Also, be aware that disconnecting the battery can reset other systems, including:
- Radio presets and clock
- Power window and seat memory
- Adaptive transmission settings
- Check engine readiness monitors
Some of these systems may take time to relearn their settings, which can affect performance temporarily.
Due to these drawbacks, we recommend using an OBD2 scanner whenever possible.
Troubleshooting Common Issues
Even after following the steps above, you might encounter problems. Here are some common issues and how to resolve them.
Check Engine Light Comes Back On
If the light returns shortly after resetting, the original problem likely wasn’t fixed. Recheck the trouble codes and inspect the related components. For example, if the code was P0420 (catalytic converter efficiency), simply clearing it won’t solve a failing converter.
Also, ensure that all repairs were done correctly. A poorly installed sensor or loose connection can cause the light to reappear.
Scanner Won’t Connect or Read Codes
If your OBD2 scanner fails to communicate with the vehicle, check the following:
- Is the ignition turned to “ON”?
- Is the scanner properly plugged into the port?
- Is the scanner compatible with your 2016 Dodge Journey?
- Is the vehicle’s battery charged? Low voltage can prevent communication.
Try using a different scanner or visiting an auto parts store that offers free code reading.
Light Flashes Instead of Staying Solid
A flashing check engine light indicates a severe problem, such as a major engine misfire that could damage the catalytic converter. In this case, stop driving immediately and have the vehicle towed to a repair shop. Continuing to drive can cause expensive damage.
No Codes Are Stored
Sometimes, the light may come on due to a temporary glitch or intermittent issue. If your scanner shows no stored codes, the problem may have resolved itself. However, monitor the vehicle closely. If the light returns, have it inspected.
Tips for Preventing Future Check Engine Light Issues
While you can’t always prevent the check engine light from coming on, regular maintenance can reduce the chances. Here are some proactive tips:
- Replace the gas cap if it’s cracked or loose: This simple fix prevents EVAP system leaks.
- Use high-quality fuel and oil: Poor-quality fuel can lead to engine knocking and sensor errors.
- Follow the maintenance schedule: Replace spark plugs, air filters, and oxygen sensors as recommended in your owner’s manual.
- Keep the engine clean: Dirt and debris can interfere with sensors and airflow.
- Avoid short trips: Frequent cold starts can prevent the engine from reaching optimal operating temperature, leading to incomplete combustion.
By staying on top of maintenance, you’ll keep your 2016 Dodge Journey running smoothly and reduce the likelihood of unexpected warning lights.
When to See a Mechanic
While many check engine light issues can be resolved at home, some problems require professional attention. Seek help from a certified mechanic if:
- The light is flashing
- You’re unable to diagnose the issue
- The problem involves the transmission, catalytic converter, or internal engine components
- You lack the tools or experience to perform the repair safely
A qualified technician has access to advanced diagnostic equipment and can perform repairs that go beyond basic troubleshooting.
Conclusion
Resetting the check engine light on your 2016 Dodge Journey doesn’t have to be intimidating. By following the steps in this guide—starting with diagnosis, fixing the issue, and using an OBD2 scanner to clear the codes—you can safely and effectively turn off the light and keep your vehicle running well.
Remember, the light is there to protect your engine and the environment. Never ignore it or reset it without understanding the cause. With the right tools and knowledge, you’ll be able to handle most issues confidently and keep your Journey on the road for years to come.