Resetting the check engine light on your 2017 Dodge Journey doesn’t have to be complicated. This guide walks you through safe, proven methods—from using an OBD2 scanner to driving cycles—so you can clear the light and ensure your vehicle runs smoothly.
Key Takeaways
- Understand the cause first: Never reset the check engine light without diagnosing the underlying issue—ignoring it could lead to serious engine damage.
- Use an OBD2 scanner for accuracy: A diagnostic tool is the most reliable way to read trouble codes and safely clear the light.
- Battery disconnection is a temporary fix: While disconnecting the battery may reset the light, it also erases important vehicle settings and may not address the root problem.
- Drive cycles help confirm repairs: After fixing the issue, complete a drive cycle to ensure the vehicle’s computer recognizes the repair and keeps the light off.
- Regular maintenance prevents future warnings: Staying on top of oil changes, air filters, and spark plugs reduces the chances of the check engine light returning.
- Seek professional help if unsure: If you can’t identify or fix the problem, consult a certified mechanic to avoid costly mistakes.
- Resetting doesn’t fix the problem: The light will return if the issue isn’t resolved—focus on repair, not just clearing the warning.
How to Reset Check Engine Light 2017 Dodge Journey
If you’ve noticed the dreaded check engine light glowing on your 2017 Dodge Journey’s dashboard, you’re not alone. This warning light can appear for dozens of reasons—some minor, like a loose gas cap, and others more serious, like a faulty oxygen sensor or catalytic converter issue. While it’s tempting to just make the light disappear, the real goal should be understanding why it came on in the first place.
In this comprehensive guide, you’ll learn how to reset the check engine light on your 2017 Dodge Journey safely and effectively. We’ll cover everything from diagnosing the problem to using tools like OBD2 scanners, performing drive cycles, and even temporary fixes like disconnecting the battery. By the end, you’ll know not only how to clear the light but also how to keep it off for good.
Let’s get started.
Understanding the Check Engine Light
Visual guide about How to Reset Check Engine Light 2017 Dodge Journey
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Before you reset the check engine 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 diagnostic system (OBD2). When the vehicle’s computer detects a problem with the engine, emissions system, or related components, it triggers the light to alert you.
The 2017 Dodge Journey uses a sophisticated OBD2 system that monitors everything from fuel mixture and ignition timing to exhaust gas recirculation and evaporative emissions. When a sensor detects an anomaly, the computer stores a diagnostic trouble code (DTC) and illuminates the check engine light.
There are two types of check engine lights:
– Solid (steady) light: Indicates a minor issue that should be checked soon, such as a loose gas cap or minor sensor glitch.
– Flashing light: Signals a severe problem, like a misfire that could damage the catalytic converter. If the light is flashing, pull over safely and have the vehicle towed to a repair shop.
Ignoring the light—even if the car seems to run fine—can lead to reduced fuel efficiency, increased emissions, and costly repairs down the road. That’s why the first step in resetting the light should always be diagnosing the cause.
Step 1: Diagnose the Problem
You can’t fix what you don’t understand. Before resetting the check engine light, you need to know why it came on. Skipping this step is like turning off a smoke alarm without checking for fire—it might silence the warning, but the danger remains.
Use an OBD2 Scanner
The most accurate way to diagnose the issue is by using an OBD2 scanner. These devices plug into your vehicle’s OBD2 port—usually located under the dashboard on the driver’s side—and read the trouble codes stored in the computer.
Here’s how to use one:
- Turn off the engine and locate the OBD2 port. In the 2017 Dodge Journey, it’s typically under the steering column, near the fuse box.
- Plug the OBD2 scanner into the port. Make sure it’s securely connected.
- Turn the ignition to the “ON” position (but don’t start the engine). This powers up the scanner and the vehicle’s computer.
- Follow the scanner’s instructions to retrieve the trouble codes. Most scanners will display a code like “P0455” or “P0171.”
- Write down the code(s) and use the scanner’s built-in database or an online resource to interpret them.
For example, code P0455 often indicates a large evaporative emissions leak—commonly caused by a loose or damaged gas cap. Code P0171 means the engine is running too lean, which could be due to a vacuum leak or faulty mass airflow sensor.
Check Common Causes
If you don’t have a scanner, you can still check a few common issues:
- Gas cap: A loose, cracked, or missing gas cap is one of the most frequent causes of the check engine light. Remove the cap, inspect it for damage, and tighten it until it clicks three times.
- Spark plugs and wires: Worn spark plugs can cause misfires. If your Journey has high mileage, consider inspecting or replacing them.
- Air filter: A clogged air filter restricts airflow and can trigger a lean fuel mixture code. Check the filter and replace it if dirty.
- Oxygen sensors: These monitor exhaust gases and help regulate fuel mixture. A faulty sensor can reduce fuel economy and increase emissions.
Even if you fix a simple issue like the gas cap, the light may stay on for a few drive cycles until the computer confirms the problem is resolved. That’s why resetting the light manually is often necessary.
Step 2: Fix the Underlying Issue
Once you’ve identified the problem, it’s time to fix it. This step is crucial—resetting the light without repairing the issue will only result in the light coming back on.
Replace Faulty Components
Depending on the trouble code, you may need to replace parts. For example:
– A P0420 code (catalytic converter efficiency below threshold) may require a new catalytic converter.
– A P0300 code (random/multiple cylinder misfire) could mean bad spark plugs, ignition coils, or fuel injectors.
If you’re comfortable with basic car repairs, you can tackle some fixes yourself. Replacing a gas cap, air filter, or spark plugs is relatively straightforward with the right tools. However, more complex issues—like oxygen sensors or catalytic converters—may require professional assistance.
Clear Temporary Glitches
Sometimes, the check engine light comes on due to a temporary glitch, such as a sudden drop in fuel pressure or a brief sensor error. In these cases, the light may turn off on its own after a few drive cycles. However, if it remains on, a manual reset is needed.
Step 3: Reset the Check Engine Light
Now that the problem is fixed, it’s time to reset the check engine light. There are several methods, ranging from simple to technical. Choose the one that best fits your situation and tools.
Method 1: Use an OBD2 Scanner (Recommended)
Using an OBD2 scanner is the safest and most effective way to reset the check engine light. It ensures the computer recognizes the repair and clears all stored codes.
Here’s how:
- Plug the OBD2 scanner into the port (as described earlier).
- Turn the ignition to the “ON” position.
- Navigate the scanner menu to find the “Clear Codes” or “Erase DTCs” option.
- Confirm the action. The scanner will send a signal to the vehicle’s computer to reset the check engine light.
- Turn off the ignition and unplug the scanner.
After resetting, start the engine. The check engine light should be off. If it returns immediately, the problem may not be fully resolved, or a new issue has arisen.
Method 2: Disconnect the Battery (Temporary Fix)
Disconnecting the battery is a common DIY method to reset the check engine light. However, it’s not always reliable and comes with drawbacks.
Here’s how to do it:
- Turn off the engine and remove the key.
- Open the hood and locate the battery. In the 2017 Dodge Journey, it’s on the driver’s side.
- Use a wrench to loosen the negative (black) terminal clamp. Remove it from the battery post.
- Wait at least 15 minutes. This allows the vehicle’s computer to fully power down and reset.
- Reconnect the negative terminal and tighten it securely.
- Start the engine. The check engine light should be off.
Important Notes:
– Disconnecting the battery resets not only the check engine light but also other systems, including radio presets, clock, and adaptive transmission settings. You may need to re-enter security codes for the radio.
– This method doesn’t always work on newer vehicles like the 2017 Journey, which have more advanced computers that retain memory even when power is removed.
– If the underlying issue isn’t fixed, the light will return.
Method 3: Drive Cycle Reset
Some vehicles, including the 2017 Dodge Journey, allow the check engine light to turn off automatically after a series of drive cycles—if the problem is resolved.
A drive cycle is a specific sequence of driving conditions that allows the vehicle’s computer to test all monitored systems. Here’s a typical drive cycle for the Journey:
- Start the engine and let it idle for 2–3 minutes (cold start).
- Drive at 30–40 mph for 3–5 minutes.
- Accelerate to 50–60 mph and maintain speed for 5–10 minutes.
- Decelerate gradually without braking hard.
- Repeat the cycle 2–3 times over several days.
After completing the drive cycle, the computer may detect that the issue is fixed and turn off the check engine light. However, this method can take days or even weeks, so it’s not ideal if you need a quick reset.
Step 4: Verify the Reset Worked
After resetting the light, it’s important to confirm that the issue is truly resolved and the light stays off.
Monitor the Dashboard
Start the engine and watch the dashboard. The check engine light should remain off. If it flashes or comes back on, the problem persists.
Use the OBD2 Scanner Again
Plug in your OBD2 scanner to check for any remaining trouble codes. If no codes appear, the reset was successful. If codes return, further diagnosis is needed.
Observe Vehicle Performance
Pay attention to how your Journey drives. Is it running smoothly? Any hesitation, rough idling, or reduced fuel economy? These could indicate an unresolved issue.
Troubleshooting Common Issues
Even after resetting the light, you may encounter problems. Here’s how to handle common scenarios.
The Light Comes Back On
If the check engine light returns shortly after resetting, the original problem wasn’t fully fixed. Possible reasons include:
– Incomplete repair (e.g., gas cap still loose)
– Intermittent fault (e.g., wiring issue)
– New problem unrelated to the original code
Use the OBD2 scanner to read the new code and address it accordingly.
The Light Won’t Reset
If the light won’t turn off after using a scanner or disconnecting the battery, possible causes are:
– The vehicle’s computer hasn’t completed its self-tests
– A persistent fault is still active
– The scanner isn’t compatible or functioning properly
Try completing a full drive cycle or consult a mechanic.
Battery Disconnection Caused Other Problems
After disconnecting the battery, you might notice:
– Radio locked (enter the security code)
– Clock reset
– Transmission shifting roughly (adaptive learning reset)
These are normal. Drive the vehicle for 10–15 miles to allow the computer to relearn driving patterns.
Preventing Future Check Engine Light Issues
The best way to avoid dealing with the check engine light is to prevent it from coming on in the first place. Regular maintenance is key.
Follow the Maintenance Schedule
Refer to your owner’s manual for the recommended maintenance schedule. For the 2017 Dodge Journey, this typically includes:
– Oil and filter change every 3,000–5,000 miles
– Air filter replacement every 15,000–30,000 miles
– Spark plug replacement every 60,000–100,000 miles
– Fuel system cleaning every 30,000 miles
Use Quality Fuel and Parts
Cheap fuel or low-quality replacement parts can trigger sensor errors and reduce engine performance. Stick to reputable gas stations and OEM or high-quality aftermarket parts.
Check the Gas Cap Regularly
Make it a habit to check the gas cap every time you refuel. Ensure it’s tight and undamaged.
Address Warning Signs Early
If you notice rough idling, reduced power, or strange smells, don’t wait for the check engine light to come on. Have the vehicle inspected promptly.
When to See a Mechanic
While many check engine light issues can be resolved at home, some require professional help. Seek a certified mechanic if:
– The light is flashing
– You’re unsure how to interpret trouble codes
– The problem involves complex systems like the transmission or emissions
– DIY fixes don’t resolve the issue
A professional diagnostic can save time and prevent further damage.
Conclusion
Resetting the check engine light on your 2017 Dodge Journey is a manageable task—if you approach it the right way. Start by diagnosing the problem with an OBD2 scanner, fix the underlying issue, and then reset the light using the scanner or another reliable method. Avoid quick fixes that ignore the root cause, and always verify that the repair was successful.
Remember, the check engine light is your vehicle’s way of saying, “Hey, something’s not right.” Respecting that warning and taking action can save you money, improve performance, and keep your Journey running smoothly for years to come.
With the steps in this guide, you’re now equipped to handle the check engine light with confidence. Stay proactive, stay informed, and drive safe.