my Ram 1500 DT (2019-Present) check engine light is on how do I reset it

Ram 1500 DT (2019-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

490 words

Problem Statement

Learn how to reset the check engine light on your 2019 Ram 1500 DT. Step-by-step instructions for diagnostics and resetting the light.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the engine is off and cool before working on the vehicle.
•Disconnect the battery before working on electrical systems to avoid shocks or shorts.

Symptoms

•Check engine light illuminated
•Possible error codes stored in the vehicle's computer
•Engine performance issues (potentially)
•Reduced fuel efficiency (potentially)
•Warning lights may flicker or flash

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify the underlying issue.
2
Record any error codes displayed and research potential causes.
3
Resolve any issues indicated by the error codes before attempting to reset the check engine light.
4
Disconnect the negative battery terminal for approximately 10 minutes to reset the vehicle’s computer.
5
Reconnect the negative battery terminal.
6
Start the engine to check if the check engine light is still illuminated.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Socket set
•Safety gloves

Parts Required

•None for resetting; however, any faulty components indicated by error codes may need replacement.

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify the underlying issue.
2
Record any error codes displayed and research potential causes.
3
Resolve any issues indicated by the error codes before attempting to reset the check engine light.
4
Disconnect the negative battery terminal for approximately 10 minutes to reset the vehicle’s computer.
5
Reconnect the negative battery terminal.
6
Start the engine to check if the check engine light is still illuminated.

Solution

1. Preparation

Gather necessary tools: OBD-II scanner, socket set, and safety gloves.
Ensure the vehicle is parked on a level surface with the engine off.

2. Scan for Error Codes

Connect the OBD-II scanner to the vehicle’s OBD-II port, usually located under the dashboard near the driver’s seat.
Turn the ignition to the ON position without starting the engine.
Follow the scanner’s instructions to retrieve error codes and note them down.

3. Address Underlying Issues

Investigate and resolve any issues indicated by the error codes.
- This may include checking for loose connections, replacing faulty sensors, or addressing mechanical issues.
Clear any repair codes using the OBD-II scanner before proceeding to reset.

4. Resetting the Check Engine Light

Turn off the vehicle and disconnect the negative battery terminal using a socket.
Wait for approximately 10 minutes to allow the vehicle’s computer to reset.
Reattach the negative battery terminal and ensure it is securely fastened.

5. Final Check

Start the engine and observe the dashboard to confirm if the check engine light remains off.
If the light is still on, further diagnostics may be necessary to identify persistent issues.