How do you reset the check engine light on a Dodge Dart?

The quickest and most reliable way to reset the check engine light on a Dodge Dart is to read the diagnostic trouble codes with an OBD-II scanner, fix the underlying issue, and clear the codes. If you simply erase the light without addressing the root cause, it’s likely to come back. A battery power cycle can be used as a last resort, but it has caveats and may require re-learning.

What the check engine light means on a Dodge Dart

The check engine light (Malfunction Indicator Lamp, MIL) signals that the engine control module has detected a fault that could affect emissions, performance or drivability. It can be triggered by anything from a loose gas cap to a faulty sensor or a misfire. Clearing the light without fixing the issue often leads to a return of the warning after the system rechecks itself.

Resetting with an OBD-II scanner

The most reliable method is to use an OBD-II scanner to read and clear stored trouble codes. The scanner can also help confirm that repairs have resolved the issue and allow monitors to reinitialize after repairs.

• Connect a compatible OBD-II scanner to the Dodge Dart’s OBD-II port, usually located under the dashboard near the steering column. Turn the ignition to ON (engine off) and follow the scanner prompts to access the stored codes.


• Record or photograph the Diagnostic Trouble Codes (DTCs) and interpret their meaning. Common causes include a loose gas cap, faulty sensor, misfire, or emissions-related component.


• Repair or replace the faulty component or address the issue indicated by the codes. If you’re unsure, consider a professional diagnosis or a free code reading at many auto parts stores for guidance.


• Use the scanner’s function to Clear Codes / Erase Codes once repairs are complete. Confirm that the MIL turns off after a drive cycle or immediately after clearing, if your vehicle allows it.

After you clear the codes, the light may go off immediately or after a short drive. If the light remains on, there may be a pending code, an issue that requires a longer drive to complete readiness checks, or an issue that was not fully repaired.

Alternate method: Battery disconnect or power cycle

As an alternative to using a scanner, you can perform a power cycle by disconnecting the negative battery cable for about 10-15 minutes. This resets many modules but has caveats: you may lose radio presets, clock settings and learned adaptations, and your car might require a security or radio code after reconnection. Reconnect the battery and start the car to see if the MIL reappears.

• With the ignition OFF, disconnect the negative battery cable. Leave it disconnected for 10-15 minutes.


• Reconnect the cable, re-enable any devices that were reset (radio presets, clock) and ensure the connection is secure.


• Start the engine and check for the MIL. If the light returns, a diagnostic read is advised as the underlying issue may persist.

This method does not fix underlying emissions or performance issues and should not replace proper diagnosis and repair.

What to do after resetting

After clearing codes, drive the Dart through a normal driving cycle to allow onboard monitors to reinitialize. Some monitors require multiple cycles and steady driving to complete, and the MIL may return if a fault is detected again.

• Drive at varying speeds and loads (city and highway) for several miles to complete drive cycles.


• If the MIL reappears, pull codes again and re-evaluate the root cause before continuing to drive aggressively or ignoring the issue.


• If you’re preparing for emissions testing, ensure all readiness monitors are complete and there are no pending codes before test day.

Common issues behind a Dodge Dart check engine light include a loose gas cap, oxygen sensor problems, misfires, mass air flow sensor faults, and exhaust or catalytic converter issues. If you’re unsure, seek a qualified mechanic or dealer service center for a proper diagnosis.

Summary

Resetting the check engine light on a Dodge Dart should focus on diagnosing and fixing the underlying fault rather than merely clearing the light. Use an OBD-II scanner to read and clear codes after repairs, or perform a careful battery power cycle only if you understand the potential impact. Allow the vehicle to complete drive cycles to reinitialize readiness monitors, and consult a professional if the light returns or you’re unsure about the diagnosis.

How to reset 2013 Dodge Dart engine light?

Disconnect the Battery: Alternatively, you can disconnect the negative terminal of the car battery for about 15 minutes. Reconnect it, and the check engine light should be reset. Drive Cycle: Drive your Dodge Dart through a complete drive cycle to see if the check engine light remains off.

How do I reset a check engine light on a Dodge?

Wait until your engine is cool and open the hood of your truck. Find the negative cable that connects to the battery and disconnect it. Wait twenty minutes for all systems to shutdown. Reconnect the negative cable.

Why is my check engine light on my Dodge Dart?

The check engine light activates when the computer detects a problem affecting the performance of the engine or transmission. Numerous issues can trigger this, such as a faulty sensor, wiring issue, module fault, or engine malfunction.

Can I manually reset my check engine light?

Yes, you can reset the check engine light yourself, but it is important to first address the underlying problem. You can reset it by disconnecting the negative battery terminal for about a minute, pulling the correct fuse, or using an OBD-II scanner to clear the code. The light will likely come back on if the issue is not fixed, and resetting it may also clear your radio presets and other vehicle settings. 
Methods to reset the light
1. Disconnect the battery 
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This is a common method, but it can reset other electronic settings in your car. 

• Turn off the car and remove the key.
• Locate the negative battery terminal (usually black with a minus sign).
• Use a wrench to loosen the nut on the terminal and pull the cable off.
• Leave the cable disconnected for 30-60 seconds.
• Reconnect the cable and tighten the nut.
• Start the car to see if the light is off.

2. Use an OBD-II scanner 

• Purchase or borrow an OBD-II scanner. Many auto parts stores will scan it for free. 
• Locate the OBD-II port, usually under the dashboard on the driver's side. 
• Plug in the scanner and turn the ignition to the "on" position (without starting the engine). 
• Follow the scanner's instructions to read and then clear the error codes. 

3. Remove the fuse 

• This method is more effective on older vehicles. 
• Locate your fuse box and find the fuse for the Engine Control Unit (ECU) or Engine Control Module (ECM). 
• Use the fuse puller or needle-nose pliers to remove the fuse. 
• Wait for 10-15 minutes, then reinsert the fuse. 

Important considerations

• The underlying problem remains: Disconnecting the battery or clearing the code does not fix the issue. If the problem persists, the light will turn back on. 
• Prepare for smog checks: Clearing the code can reset your vehicle's readiness monitors, which is necessary for passing an emissions test. It may take several days of driving to reset these monitors. 
• Be careful: Do not use a scanner to try and "jump" the diagnostic port. This can damage your car's computer.