How to Reset Engine Light on 2016 Chrysler 200

This guide walks you through how to reset the engine light on a 2016 Chrysler 200 using proven techniques. You’ll learn when it’s safe to reset the light and when professional help is needed.

Key Takeaways

• Understand the cause first: Never reset the engine light without diagnosing the underlying issue to avoid recurring problems.
• Use an OBD2 scanner for accuracy: This is the most reliable method to read and clear trouble codes on your 2016 Chrysler 200.
• Manual reset methods have limitations: Disconnecting the battery may reset the light temporarily but won’t fix the root cause.
• Check for pending codes after reset: Some issues may reappear if not resolved, so monitor your dashboard closely.
• Regular maintenance prevents future warnings: Follow your owner’s manual schedule to keep the engine running smoothly.
• Seek professional help for complex issues: If the light returns or you’re unsure, consult a certified mechanic.
• Resetting doesn’t fix mechanical problems: The light is a warning—ignoring it can lead to costly repairs down the road.

How to Reset Engine Light on 2016 Chrysler 200

If you’ve noticed the dreaded “Check Engine” light glowing on your 2016 Chrysler 200’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 ignition coil. While it’s tempting to ignore it or hope it goes away, the best approach is to diagnose the issue and then reset the light properly.

In this comprehensive guide, you’ll learn exactly how to reset the engine light on a 2016 Chrysler 200 using safe, effective methods. We’ll cover everything from understanding what the light means, diagnosing the problem, using an OBD2 scanner, trying manual reset techniques, and knowing when to call a professional. By the end, you’ll feel confident handling this common automotive issue—without unnecessary trips to the dealership.

Why the Engine Light Comes On

Before jumping into resetting the light, it’s crucial to understand why it turned on in the first place. The “Check Engine” light—also known as the Malfunction Indicator Lamp (MIL)—is part of your vehicle’s onboard diagnostics system (OBD2). This system continuously monitors engine performance, emissions, and other critical systems.

When a sensor detects an anomaly—such as a drop in fuel efficiency, misfiring cylinders, or a problem with the exhaust system—the computer logs a trouble code and triggers the engine light. These codes range from minor (P0455: large EVAP leak, often due to a loose gas cap) to severe (P0300: random/multiple cylinder misfire).

Ignoring the light can lead to reduced fuel economy, increased emissions, and even engine damage over time. That’s why diagnosing the issue is the first and most important step.

Step 1: Diagnose the Problem

You should never reset the engine light without first identifying the cause. Resetting it without fixing the problem is like turning off a smoke alarm while the house is still on fire—it doesn’t solve anything.

Use an OBD2 Scanner

The most accurate way to diagnose the issue is by using an OBD2 (On-Board Diagnostics II) 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 car’s computer.

Here’s how to use one:

1. Locate the OBD2 port: In the 2016 Chrysler 200, it’s typically found beneath the steering column, near the fuse box. It’s a 16-pin connector, often covered by a small flap.
2. Turn off the ignition: Make sure the engine is off before connecting the scanner.
3. Plug in the scanner: Insert the OBD2 scanner into the port. Most scanners will power on automatically when the ignition is turned to the “ON” position (without starting the engine).
4. Turn the ignition to “ON”: This powers up the vehicle’s electrical system without starting the engine.
5. Follow the scanner’s prompts: Most scanners will ask you to select your vehicle make, model, and year. Once connected, press “Read Codes” or a similar button.
6. Record the trouble code(s): The scanner will display one or more codes (e.g., P0171 – System Too Lean). Write these down for reference.

Once you have the code, you can look it up online or in the scanner’s built-in database to understand what it means. For example, P0171 often indicates a vacuum leak or faulty mass airflow sensor.

Check Common Causes

If you don’t have an OBD2 scanner, you can still perform a few basic checks:

• Inspect the gas cap: A loose, damaged, or missing gas cap is one of the most common reasons for the engine light to come on. Tighten it securely or replace it if cracked.
• Look for obvious leaks: Check under the hood for loose hoses, cracked vacuum lines, or signs of oil or coolant leaks.
• Listen for unusual sounds: Misfires, rattling, or rough idling can indicate ignition or fuel system problems.
• Check fluid levels: Low oil, coolant, or transmission fluid can trigger warning lights.

While these checks won’t give you a specific code, they can help you narrow down the issue before investing in a scanner or visiting a mechanic.

Step 2: Fix the Underlying Issue

Once you’ve identified the problem, the next step is to fix it. This is where many people go wrong—resetting the light without addressing the root cause. Doing so may make the light disappear temporarily, but it will likely return once the computer detects the same issue again.

Common Fixes for 2016 Chrysler 200

Here are some typical issues and their solutions:

• Loose or faulty gas cap: Tighten it or replace it with an OEM-quality cap. After driving a few miles, the light may turn off on its own.
• Oxygen (O2) sensor failure: These sensors monitor exhaust gases and help regulate fuel mixture. A failing O2 sensor can reduce fuel economy and increase emissions. Replacement typically costs $100–$300, including labor.
• Mass Airflow (MAF) sensor issues: A dirty or faulty MAF sensor can cause poor acceleration and rough idling. Cleaning it with MAF cleaner spray may help; otherwise, replacement is needed.
• Spark plug or ignition coil problems: Worn spark plugs or failing coils can cause misfires. Replacing them is relatively inexpensive and can restore engine performance.
• EVAP system leaks: The evaporative emissions system prevents fuel vapors from escaping. A small leak (often in a hose or charcoal canister) can trigger the light. A smoke test at a repair shop can pinpoint the issue.

Always use quality replacement parts and follow torque specifications when applicable. If you’re not comfortable performing repairs yourself, take your vehicle to a trusted mechanic.

Step 3: Reset the Engine Light

After fixing the issue, it’s time to reset the engine light. There are several methods, but not all are equally effective.

Method 1: Use an OBD2 Scanner (Recommended)

This is the most reliable and professional way to reset the engine light on your 2016 Chrysler 200.

1. Ensure the repair is complete: Double-check that the problem has been fixed and all components are properly installed.
2. Connect the OBD2 scanner: Plug it into the OBD2 port and turn the ignition to “ON.”
3. Access the menu: Navigate to the “Clear Codes” or “Erase Codes” option on the scanner.
4. Confirm the reset: The scanner will ask for confirmation. Select “Yes” or “OK.”
5. Wait for confirmation: The scanner will display a message like “Codes Cleared” or “Reset Successful.”
6. Turn off the ignition: Disconnect the scanner and turn the key to “OFF.”

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 been detected.

Method 2: Disconnect the Battery (Manual Reset)

This method forces the vehicle’s computer to reset by cutting power. However, it’s less precise and may not clear all codes.

1. Turn off the engine and remove the key: Ensure the vehicle is completely off.
2. Locate the battery: Open the hood and find the 12-volt battery (usually on the driver’s side).
3. Disconnect the negative terminal: Use a wrench to loosen the nut on the negative (black) cable. Remove the cable and tuck it away from the battery terminal to prevent accidental contact.
4. Wait 15–30 minutes: This allows the vehicle’s computer (ECU) to fully discharge and reset. Some sources recommend waiting up to an hour for a complete reset.
5. Reconnect the battery: Reattach the negative cable and tighten the nut securely.
6. Start the engine: Turn the key and see if the engine light is off.

Note: Disconnecting the battery may also reset other systems, such as the radio presets, clock, and adaptive transmission settings. You may need to re-enter security codes for the radio or reprogram key fobs.

Method 3: Drive Cycle Reset (Automatic Clear)

In some cases, the engine light will turn off on its own after the issue is fixed and the vehicle completes a “drive cycle.” A drive cycle is a series of driving conditions that allow the onboard computer to retest systems and confirm the problem is resolved.

For the 2016 Chrysler 200, a typical drive cycle includes:

• Cold start (engine off for at least 8 hours)
• Idle for 2–3 minutes
• Drive at varying speeds (city and highway) for 10–15 minutes
• Include acceleration, deceleration, and steady cruising
• Turn off the engine and repeat if necessary

After completing 2–3 drive cycles without the issue recurring, the computer may automatically clear the code and turn off the light. However, this method is slower and less reliable than using a scanner.

Step 4: Verify the Reset

After resetting the light, it’s important to confirm that the issue is truly resolved.

Monitor the Dashboard

Drive your vehicle for a few days and watch the dashboard. If the “Check Engine” light returns, the problem may not be fully fixed, or a new issue has developed.

Recheck with an OBD2 Scanner

Use your scanner to check for pending or stored codes. Even if the light is off, the computer may still have logged a problem. If codes reappear, further diagnosis is needed.

Look for Performance Issues

Pay attention to how your car drives. Symptoms like rough idling, hesitation, poor fuel economy, or reduced power may indicate an ongoing issue—even if the light is off.

Troubleshooting Common Reset Problems

Sometimes, resetting the engine light doesn’t go as planned. Here’s how to handle common issues:

The Light Comes Back On

If the “Check Engine” light returns after a reset, the underlying problem likely wasn’t fixed. Recheck your diagnosis and repairs. It’s also possible that multiple issues are present, and only one was addressed.

Scanner Won’t Connect

If your OBD2 scanner won’t communicate with the vehicle:

• Ensure the ignition is in the “ON” position (engine off).
• Check that the OBD2 port is clean and undamaged.
• Try a different scanner or update the software.
• Verify the scanner is compatible with Chrysler vehicles.

Battery Disconnection Didn’t Work

Disconnecting the battery may not clear all codes, especially if the issue is intermittent or the computer hasn’t completed a full drive cycle. Use an OBD2 scanner for a more thorough reset.

Radio or Settings Reset

After disconnecting the battery, you may need to:

• Reset the clock and radio presets.
• Re-enter the radio security code (found in your owner’s manual or glove box).
• Reprogram key fobs if they no longer work.

When to See a Mechanic

While many engine light issues can be resolved at home, some problems require professional attention. Seek help if:

• The light is flashing (indicates a severe misfire that can damage the catalytic converter).
• You’re unable to read or interpret the trouble codes.
• The issue involves complex systems like the transmission, fuel injection, or emissions.
• You lack the tools or confidence to perform repairs safely.
• The light returns repeatedly despite your efforts.

A certified mechanic has advanced diagnostic tools and experience with Chrysler vehicles. They can perform a thorough inspection and ensure the problem is fully resolved.

Preventing Future Engine Light Issues

The best way to avoid engine light problems is through regular maintenance. Follow these tips to keep your 2016 Chrysler 200 running smoothly:

• Follow the maintenance schedule: Refer to your owner’s manual for oil changes, spark plug replacements, and other services.
• Use quality fuel and fluids: Cheap gas or low-grade oil can harm engine performance.
• Inspect hoses and belts: Look for cracks, leaks, or wear during routine checks.
• Tighten the gas cap after refueling: Make it a habit to ensure it’s secure.
• Address warning lights promptly: Don’t delay diagnosis or repairs.

Regular care not only prevents engine light issues but also extends the life of your vehicle and improves fuel efficiency.

Conclusion

Resetting the engine light on a 2016 Chrysler 200 doesn’t have to be intimidating. By following the steps in this guide—diagnosing the issue, fixing the problem, and using the right reset method—you can safely clear the warning and keep your car running smoothly.

Remember, the engine light is there to protect your vehicle. Never ignore it or reset it without understanding the cause. With the right tools and knowledge, you can handle most issues yourself and avoid costly repairs down the road.

Whether you use an OBD2 scanner, disconnect the battery, or complete a drive cycle, always verify that the problem is truly resolved. And when in doubt, don’t hesitate to consult a professional.

By taking a proactive approach to vehicle maintenance, you’ll enjoy a safer, more reliable driving experience in your 2016 Chrysler 200.