Resetting the engine light on your Dodge Journey doesn’t always require a mechanic. This guide walks you through safe, effective methods—from using an OBD2 scanner to battery disconnection—while explaining why the light came on and how to prevent future issues.
Key Takeaways
- Understand why the engine light is on: The check engine light can signal anything from a loose gas cap to a serious engine issue. Diagnosing the cause is essential before resetting.
- Use an OBD2 scanner for accuracy: This tool reads error codes and safely resets the light. It’s the most reliable method and helps prevent recurring problems.
- Battery disconnection is a temporary fix: Disconnecting the battery may reset the light, but it also erases important vehicle settings and may not address the root cause.
- Always tighten the gas cap first: A loose or faulty gas cap is a common cause. Tighten it and drive a few miles to see if the light turns off on its own.
- Resetting doesn’t fix the problem: Simply clearing the code won’t repair the underlying issue. Address the cause to avoid damage or repeated warnings.
- Monitor after reset: Drive your Journey for a few days and watch for the light to return. If it does, further diagnosis is needed.
- Seek professional help when needed: Complex issues like catalytic converter or oxygen sensor problems require expert attention.
How to Reset Engine Light Dodge Journey: A Complete DIY Guide
Seeing the check engine light pop up on your Dodge Journey’s dashboard can be stressful. It’s like your car is waving a little red flag, saying, “Hey, something’s not right!” But before you panic or rush to the mechanic, know this: resetting the engine light on your Dodge Journey is often something you can do yourself—safely and effectively—with the right tools and knowledge.
In this comprehensive guide, we’ll walk you through every step of resetting the engine light on your Dodge Journey. Whether you’re a seasoned DIYer or a first-time car owner, we’ve got you covered. You’ll learn how to diagnose the problem, choose the best reset method, and avoid common mistakes. Plus, we’ll share practical tips to keep your Journey running smoothly long after the light is gone.
By the end of this guide, you’ll not only know how to reset engine light Dodge Journey, but also understand what caused it in the first place—and how to prevent it from coming back.
Why Is the Check Engine Light On?
Before you reset the light, it’s crucial to understand why it came on. The check engine light—also known as the malfunction indicator lamp (MIL)—is part of your vehicle’s onboard diagnostics system (OBD2). It monitors everything from engine performance to emissions and fuel systems.
Visual guide about How to Reset Engine Light Dodge Journey
Image source: dodgecheckenginelight.com
The light can trigger for dozens of reasons, ranging from minor to serious. Here are the most common causes in a Dodge Journey:
- Loose or faulty gas cap: This is the #1 culprit. If the cap isn’t tightened properly after refueling, fuel vapors can escape, triggering the light.
- Oxygen (O2) sensor failure: These sensors monitor exhaust gases. A faulty one can reduce fuel efficiency and increase emissions.
- Catalytic converter issues: Over time, this component can clog or fail, leading to poor performance and higher emissions.
- Mass airflow (MAF) sensor problems: This sensor measures how much air enters the engine. Dirt or damage can cause incorrect readings.
- Spark plug or ignition coil failure: Worn spark plugs or bad coils can cause misfires, reducing power and fuel economy.
- Evaporative emissions (EVAP) system leak: A small leak in the fuel vapor system can trigger the light.
- Thermostat or coolant temperature sensor issues: These can cause overheating or incorrect temperature readings.
Ignoring the light can lead to reduced fuel efficiency, increased emissions, and even engine damage. So while resetting the light is helpful, fixing the root cause is essential.
Method 1: Use an OBD2 Scanner (Recommended)
The most accurate and reliable way to reset the engine light on your Dodge Journey is by using an OBD2 scanner. This handheld device plugs into your car’s diagnostic port and reads the trouble codes stored in the computer. It also allows you to clear those codes and reset the light—safely and effectively.
What You’ll Need
- OBD2 scanner (basic models start around $20)
- Dodge Journey (engine off)
- Owner’s manual (to locate the OBD2 port)
Step-by-Step Instructions
Step 1: Locate the OBD2 Port
The OBD2 port is usually found under the dashboard on the driver’s side. In most Dodge Journey models (2009–2020), it’s located near the steering column, just below the knee panel. It’s a 16-pin connector, often black or gray, and may have a small cover.
Tip: If you can’t find it, check your owner’s manual or look for a label that says “OBD” or “Diagnostics.”
Step 2: Plug in the OBD2 Scanner
Turn off the engine and insert the scanner’s plug into the OBD2 port. Make sure it’s fully seated. Some scanners will power on automatically when connected; others may have a power button.
Step 3: Turn the Ignition to “On”
Turn the key to the “ON” position (but don’t start the engine). This powers up the vehicle’s computer and allows the scanner to communicate with it.
Step 4: Read the Trouble Codes
Follow the scanner’s on-screen prompts to “Read Codes” or “Scan.” The device will retrieve any stored diagnostic trouble codes (DTCs), such as P0455 (large EVAP leak) or P0300 (random misfire).
Pro Tip: Write down the codes before clearing them. This helps you research the issue later or share it with a mechanic.
Step 5: Clear the Codes
Once you’ve read the codes, select “Clear Codes” or “Erase DTCs” from the menu. The scanner will send a command to the vehicle’s computer to reset the check engine light.
Step 6: Turn Off the Ignition and Unplug
Turn the key back to “OFF” and unplug the scanner. Start the engine and check the dashboard. The check engine light should be off.
What to Do After Resetting
After clearing the codes, drive your Journey for 30–50 miles. This allows the vehicle’s computer to run its self-tests and monitor systems. If the light stays off, the issue may have been minor (like a loose gas cap). If it returns, the problem still exists and needs attention.
Recommended OBD2 Scanners for Dodge Journey
- BlueDriver Bluetooth Scanner: Pairs with your smartphone via app. Great for reading and clearing codes, plus live data.
- Autel MaxiCOM MK808: More advanced, with full system diagnostics. Ideal for serious DIYers.
- Innova 3160g: User-friendly with code definitions and repair suggestions.
Note: Avoid cheap, no-name scanners. They may not work reliably or support all Dodge models.
Method 2: Disconnect the Battery (Temporary Fix)
If you don’t have an OBD2 scanner, you can reset the engine light by disconnecting the car battery. This method forces the vehicle’s computer to reset, clearing stored codes and turning off the light. However, it’s not recommended as a first choice—here’s why.
How It Works
When you disconnect the battery, the power to the engine control unit (ECU) is cut. This erases temporary memory, including trouble codes and learned driving habits (like fuel trim). When you reconnect the battery, the ECU starts fresh—and the check engine light goes off.
Step-by-Step Instructions
Step 1: Turn Off the Engine and Remove the Key
Make sure the vehicle is completely off. Remove the key from the ignition to avoid electrical issues.
Step 2: Locate the Battery
In the Dodge Journey, the battery is under the hood, on the driver’s side. It’s usually held in place by a clamp and covered by a plastic lid.
Step 3: Disconnect the Negative Terminal
Use a wrench (usually 10mm) to loosen the nut on the negative (–) terminal. Lift the cable off the battery post. Always disconnect the negative first to avoid short circuits.
Step 4: Wait 15–30 Minutes
Leave the battery disconnected for at least 15 minutes. This ensures the ECU fully resets. Some experts recommend up to 30 minutes for older models.
Step 5: Reconnect the Battery
Reattach the negative cable and tighten the nut securely. Make sure it’s snug but don’t overtighten.
Step 6: Start the Engine
Turn the key and start the Journey. The check engine light should be off. If it comes back on within a few days, the underlying issue hasn’t been fixed.
Drawbacks of Battery Disconnection
- Erases learned settings: The ECU forgets your driving habits, which can cause rough idling or poor fuel economy for a few days.
- Resets radio and clock: You’ll need to reprogram the radio presets, clock, and sometimes the power windows.
- Doesn’t fix the problem: If the issue persists, the light will return after the system runs its tests.
- May trigger other warnings: Some systems (like ABS or airbags) may need recalibration.
Bottom line: Use this method only if you don’t have access to an OBD2 scanner—and always follow up with proper diagnosis.
Method 3: Drive It Out (For Minor Issues)
In some cases, the check engine light may turn off on its own—especially if the cause was temporary. This is known as “drive cycle completion.”
When It Works
If the light came on due to a loose gas cap, a brief sensor glitch, or a minor EVAP leak, driving the vehicle for a few days may allow the system to retest and clear the code automatically.
How to Do It
- Tighten the gas cap firmly (turn until it clicks 3–4 times).
- Drive normally for 3–5 days, including highway and city driving.
- Ensure the vehicle goes through various conditions: cold start, warm-up, acceleration, and deceleration.
Most Dodge Journey models require 3–5 drive cycles (each cycle includes starting the engine, driving, and turning it off) for the system to retest.
Note: This method only works for intermittent or minor issues. If the light stays on or returns, use an OBD2 scanner.
Troubleshooting Common Issues
Even after resetting the light, you might run into problems. Here’s how to handle common scenarios.
The Light Comes Back On
If the check engine light returns within a few days, the original issue hasn’t been resolved. Use an OBD2 scanner to read the new code and research the cause. Common recurring issues include:
- Faulty oxygen sensor
- Worn spark plugs
- Catalytic converter failure
- Persistent EVAP leak
Action: Address the root cause. For example, replace a bad O2 sensor or repair a cracked vacuum hose.
The Light Flashes
A flashing check engine light indicates a severe problem—usually a engine misfire that can damage the catalytic converter. Do not drive the vehicle. Pull over safely and call a tow truck. Continuing to drive can cause expensive damage.
The Scanner Won’t Connect
If your OBD2 scanner won’t communicate with the vehicle:
- Check that the ignition is in the “ON” position.
- Ensure the OBD2 port is clean and undamaged.
- Try a different scanner or update the firmware.
- Verify compatibility with your Dodge Journey’s year and model.
The Battery Keeps Dying After Disconnection
If your battery drains quickly after reconnecting, you may have a parasitic draw or a failing battery. Test the battery and alternator at an auto parts store.
Preventing Future Engine Light Issues
The best way to avoid resetting the engine light is to prevent it from coming on in the first place. Here are some proactive tips for Dodge Journey owners:
- Check the gas cap after every fill-up: Make sure it’s tight and the seal isn’t cracked.
- Follow the maintenance schedule: Replace spark plugs, air filters, and oxygen sensors as recommended (usually every 30,000–100,000 miles).
- Use quality fuel: Cheap gas with high ethanol content can harm sensors and fuel systems.
- Watch for performance issues: Rough idling, poor acceleration, or reduced fuel economy can signal early problems.
- Scan regularly: Even if the light isn’t on, use an OBD2 scanner every 6 months to check for pending codes.
Regular maintenance not only prevents check engine lights but also extends the life of your Journey.
When to See a Mechanic
While many engine light issues can be handled at home, some require professional diagnosis and repair. Seek a certified mechanic if:
- The light is flashing.
- You notice strong smells, smoke, or unusual noises.
- The vehicle is overheating or losing power.
- Multiple codes appear, especially related to the transmission or emissions.
- You’re unsure how to interpret or fix the problem.
A professional scan tool can access deeper system data and perform advanced tests that consumer scanners can’t.
Final Thoughts
Resetting the engine light on your Dodge Journey doesn’t have to be intimidating. With the right approach—starting with an OBD2 scanner—you can safely clear the light and get back on the road with confidence. Remember, resetting the light is only half the battle. The real win comes from diagnosing and fixing the underlying issue.
Whether you tighten a gas cap, replace a sensor, or simply drive it out, taking action shows you care about your vehicle’s health. And a well-maintained Dodge Journey will reward you with years of reliable service.
So the next time that little orange light appears, don’t panic. Grab your scanner, follow this guide, and take control. Your Journey—and your wallet—will thank you.