This guide walks you through how to reset the check engine light on a 2016 Chrysler 200 using simple methods like the OBD2 scanner, battery disconnect, or driving cycle. Always diagnose the root cause first to avoid recurring issues.
Key Takeaways
- Diagnose the issue first: Use an OBD2 scanner to read trouble codes before resetting the light. Ignoring the problem can lead to engine damage.
- Use an OBD2 scanner for a safe reset: This is the most reliable and recommended method for clearing the check engine light on a 2016 Chrysler 200.
- Battery disconnect is a temporary fix: Disconnecting the battery may reset the light, but it also erases important vehicle settings and may not clear all codes.
- Complete a drive cycle to confirm repairs: After fixing the issue, drive the car under normal conditions to ensure the light stays off.
- Check gas cap and sensors: A loose gas cap or faulty oxygen sensor are common causes of the check engine light in this model.
- Avoid cheap code readers: Invest in a quality OBD2 scanner with Chrysler-specific compatibility for accurate results.
- Consult a mechanic if unsure: If the light returns repeatedly, professional diagnosis is essential to prevent long-term damage.
How to Reset Check Engine Light on 2016 Chrysler 200
If you’ve recently fixed an issue with your 2016 Chrysler 200 and the check engine light is still on, you’re not alone. Many drivers face this frustrating situation. The good news? Resetting the check engine light is often straightforward—but only after you’ve addressed the underlying problem. This comprehensive guide will walk you through everything you need to know about how to reset the check engine light on a 2016 Chrysler 200 safely and effectively.
In this guide, you’ll learn:
– Why the check engine light comes on
– How to diagnose the issue using an OBD2 scanner
– Step-by-step methods to reset the light
– Tips to prevent the light from returning
– Troubleshooting common problems
Let’s get started.
Understanding the Check Engine Light
Visual guide about How to Reset Check Engine Light on 2016 Chrysler 200
Image source: youcanic.com
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 diagnostics system (OBD2). When it illuminates, it means the car’s computer has detected a problem with the engine, emissions system, or related components.
On a 2016 Chrysler 200, the check engine light can be triggered by something as simple as a loose gas cap or as serious as a failing catalytic converter. That’s why resetting the light without fixing the root cause is like putting a bandage on a broken bone—it might look better temporarily, but the problem will return.
Common Causes of the Check Engine Light in a 2016 Chrysler 200
Here are some of the most frequent reasons the check engine light appears in this model:
– Loose or damaged gas cap
– Faulty oxygen (O2) sensor
– Mass airflow (MAF) sensor issues
– Catalytic converter problems
– Spark plug or ignition coil failure
– Evaporative emissions (EVAP) system leaks
– Engine misfires
Knowing these common causes can help you narrow down the issue before attempting a reset.
Step 1: Diagnose the Problem with an OBD2 Scanner
The first and most crucial step is to diagnose why the check engine light is on. You can’t reset it properly without knowing what’s wrong. The best tool for this job is an OBD2 scanner.
What Is an OBD2 Scanner?
An OBD2 scanner is a handheld device that plugs into your car’s OBD2 port and reads diagnostic trouble codes (DTCs). These codes tell you exactly what system or component is malfunctioning. For example, code P0457 might indicate a loose gas cap, while P0420 could point to a failing catalytic converter.
Where Is the OBD2 Port on a 2016 Chrysler 200?
In the 2016 Chrysler 200, the OBD2 port is located under the dashboard on the driver’s side, near the steering column. It’s usually within easy reach—just look for a 16-pin connector. You may need to crouch down or use a flashlight to spot it.
How to Use an OBD2 Scanner
Follow these steps to read the trouble codes:
- Turn off the engine and locate the OBD2 port.
- Plug the scanner into the port firmly.
- Turn the ignition to the “ON” position (do not start the engine).
- Follow the scanner’s on-screen instructions to retrieve codes.
- Write down the codes displayed (e.g., P0171, P0420).
Most modern scanners also provide a brief description of each code. If yours doesn’t, you can look up the code online or use a free app like Torque Pro (for Android) or OBD Fusion (for iOS).
Interpreting the Codes
Once you have the codes, research what they mean. For example:
– P0455: Large EVAP leak (often a loose gas cap)
– P0135: O2 sensor heater circuit malfunction
– P0300: Random/multiple cylinder misfire
Understanding the code helps you decide whether you can fix the issue yourself or need a mechanic.
Step 2: Fix the Underlying Issue
Now that you know what’s causing the check engine light, it’s time to fix it. Skipping this step and resetting the light immediately is a mistake—the light will just come back on.
Example: Fixing a Loose Gas Cap
One of the most common causes is a loose or damaged gas cap. Here’s how to fix it:
- Turn off the engine and let the car cool.
- Open the fuel door and unscrew the gas cap.
- Inspect the cap for cracks or a worn seal.
- If it looks damaged, replace it with a new OEM or high-quality aftermarket cap.
- Screw the cap back on until you hear it click three times.
After tightening or replacing the cap, the check engine light may turn off on its own after a few drive cycles. If not, you’ll need to reset it manually.
Example: Replacing an Oxygen Sensor
If your scanner shows an O2 sensor code (like P0135), you may need to replace the sensor. This is a more advanced repair, but doable with basic tools:
- Locate the faulty O2 sensor (usually on the exhaust manifold or downpipe).
- Disconnect the electrical connector.
- Use an O2 sensor socket and wrench to remove the old sensor.
- Install the new sensor and reconnect the wiring.
- Clear the code and test drive the car.
Always use a sensor compatible with your 2016 Chrysler 200. Cheap sensors may fail quickly.
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 an OBD2 scanner, disconnecting the battery, or completing a drive cycle. Let’s explore each.
Method 1: Reset Using an OBD2 Scanner (Recommended)
This is the safest and most effective way to reset the check engine light.
Step-by-Step Instructions
- Ensure the engine is off and the key is removed.
- Plug the OBD2 scanner into the port under the dashboard.
- Turn the ignition to the “ON” position (do not start the engine).
- Navigate the scanner menu to find the “Clear Codes” or “Erase DTCs” option.
- Confirm the action when prompted.
- Wait for the scanner to display “Codes Cleared” or a similar message.
- Turn off the ignition and unplug the scanner.
After resetting, start the engine. The check engine light should be off. If it comes back on immediately, the problem may not be fully resolved.
Method 2: Disconnect the Battery (Alternative Method)
If you don’t have an OBD2 scanner, you can try disconnecting the battery. This method resets the car’s computer by cutting power, but it’s not as reliable and has downsides.
Step-by-Step Instructions
- Turn off the engine and remove the key.
- Open the hood and locate the battery (in the engine bay).
- Use a wrench to loosen the negative (-) terminal clamp.
- Remove the negative cable and tuck it away from the battery.
- Wait at least 15 minutes (this allows the computer to fully reset).
- Reconnect the negative cable and tighten the clamp.
- Close the hood and start the engine.
Important Notes
– Disconnecting the battery resets more than just the check engine light. It may also reset your radio presets, clock, and adaptive transmission settings.
– Some vehicles require a relearn procedure after battery disconnection.
– This method may not clear all trouble codes, especially if the issue persists.
Method 3: Drive Cycle Reset (Passive Method)
Sometimes, the check engine light will turn off on its own after the problem is fixed and the car completes a drive cycle. A drive cycle is a series of driving conditions that allow the car’s computer to retest all systems.
How to Complete a Drive Cycle on a 2016 Chrysler 200
- Start the engine and let it idle for 2–3 minutes (cold start).
- Drive at 30–40 mph for 5 minutes with steady throttle.
- Accelerate to 55–60 mph and maintain speed for 10 minutes.
- Decelerate slowly without braking (coast to a stop).
- Repeat the cycle 2–3 times over several days.
After completing the drive cycle, the computer should detect that the issue is resolved and turn off the check engine light. This method works best for minor issues like a loose gas cap.
Troubleshooting Common Reset Issues
Even after following the steps, you might run into problems. Here’s how to handle common issues.
The Light Comes Back On After Reset
If the check engine light returns shortly after resetting, the underlying problem hasn’t been fixed. Recheck the trouble codes and inspect the related components. For example:
– If the code is P0420 (catalytic converter), the converter may be failing and needs replacement.
– If it’s P0301 (cylinder 1 misfire), check the spark plug, ignition coil, and fuel injector.
Ignoring recurring codes can lead to reduced fuel efficiency, engine damage, or failed emissions tests.
The Scanner Won’t Connect
If your OBD2 scanner won’t connect:
– Make sure the ignition is in the “ON” position.
– Check that the scanner is compatible with Chrysler vehicles.
– Try a different scanner or update the firmware.
– Inspect the OBD2 port for dirt or damage.
The Battery Disconnect Didn’t Work
Disconnecting the battery doesn’t always clear codes, especially if the issue is still present. Also, some Chrysler models have persistent memory that retains codes even after power loss. In such cases, an OBD2 scanner is your best bet.
Tips to Prevent the Check Engine Light from Coming Back
Prevention is better than cure. Here are some tips to keep your 2016 Chrysler 200 running smoothly and avoid future check engine light issues.
Regular Maintenance
– Change the oil every 5,000–7,500 miles.
– Replace spark plugs every 60,000–100,000 miles.
– Inspect and replace the air filter as needed.
– Use high-quality fuel and avoid contaminated gas stations.
Check the Gas Cap Regularly
After every fill-up, make sure the gas cap is tight. A loose cap is one of the easiest fixes—and one of the most overlooked.
Monitor Warning Signs
Pay attention to symptoms like rough idling, poor fuel economy, or hesitation during acceleration. These can signal early problems before the check engine light comes on.
Use a Quality OBD2 Scanner
Invest in a reliable scanner like the BlueDriver, Autel MaxiCOM, or Innova 3160. These devices offer better compatibility and more detailed diagnostics than cheap alternatives.
When to See a Mechanic
While many check engine light issues can be resolved at home, some require professional help. See a mechanic if:
– The light flashes (indicating a severe misfire that can damage the catalytic converter).
– You’re unable to diagnose or fix the problem.
– The light returns repeatedly after repairs.
– You notice performance issues like stalling, loss of power, or strange noises.
A certified Chrysler technician has access to advanced diagnostic tools and factory service information, ensuring accurate repairs.
Conclusion
Resetting the check engine light on a 2016 Chrysler 200 is a manageable task—if you follow the right steps. Start by diagnosing the issue with an OBD2 scanner, fix the underlying problem, and then reset the light using the scanner, battery disconnect, or drive cycle method. Always prioritize safety and accuracy over speed.
Remember, the check engine light is your car’s way of saying, “Hey, something’s wrong.” Ignoring it can lead to costly repairs down the road. By taking the time to understand and address the issue, you’ll keep your Chrysler 200 running smoothly for years to come.
With the tips and techniques in this guide, you’re now equipped to handle the check engine light like a pro. Drive safe, stay informed, and don’t hesitate to seek help when needed.