what to do if my Ford Explorer check engine light keeps coming on

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

509 words

Problem Statement

Learn how to diagnose and fix the check engine light issue on your Ford Explorer. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow engine to cool before performing repairs.

Symptoms

•Check engine light illuminated
•Reduced engine performance or power
•Increased fuel consumption
•Engine misfiring or rough idling
•Unusual exhaust emissions or smell
•Potential overheating issues

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Inspect the vehicle's gas cap for damage or improper sealing.
3
Check engine oil level and quality; look for leaks or contamination.
4
Examine the air filter for clogs or restrictions.
5
Inspect spark plugs and ignition coils for wear or damage.
6
Verify the functionality of the oxygen sensors and other emission-related components.

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
•Torque wrench
•Multimeter
•Screwdrivers

Parts Required

•Gas cap (if damaged)
•Spark plugs (if worn)
•Ignition coils (if necessary)
•Oxygen sensors (if faulty)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Inspect the vehicle's gas cap for damage or improper sealing.
3
Check engine oil level and quality; look for leaks or contamination.
4
Examine the air filter for clogs or restrictions.
5
Inspect spark plugs and ignition coils for wear or damage.
6
Verify the functionality of the oxygen sensors and other emission-related components.

Solution

1. Preparation

Gather all necessary tools and parts before starting the repair.
Disconnect the battery to ensure safety while working on electrical components.

Tools Required:

OBD-II scanner
Socket set
Torque wrench
Multimeter
Screwdrivers

2. Address Error Codes

Sub-step 1: Connect the OBD-II scanner to the vehicle’s diagnostic port.
Sub-step 2: Retrieve and document the error codes.
Sub-step 3: Research the error codes to determine specific repairs needed.

3. Replace Faulty Components

Sub-step 1: If the gas cap is damaged, replace it with a new one.
Sub-step 2: If spark plugs or ignition coils are worn, remove and replace them, ensuring to use the correct torque specifications.
Sub-step 3: If oxygen sensors are faulty, unclip the wiring connector, remove the sensor, and install a new one, ensuring to secure it properly.

4. Clear Error Codes

Sub-step 1: After repairs, reconnect the battery.
Sub-step 2: Use the OBD-II scanner to clear any stored error codes.

5. Test Drive

Sub-step 1: Start the vehicle and allow it to reach operating temperature.
Sub-step 2: Take the vehicle for a test drive to ensure the check engine light does not reappear.