why does my Ford Explorer Fifth Generation (2011-2019) check engine light keep coming on

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

494 words

Problem Statement

Learn how to diagnose and fix the check engine light issue in Ford Explorer Fifth Generation (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before opening any components.

Symptoms

•Check engine light illuminated
•Rough idle or engine stalling
•Decreased fuel efficiency
•Increased emissions
•Engine misfire or hesitation during acceleration
•Unusual noises from the engine compartment

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Inspect the gas cap for damage or improper sealing.
3
Check the engine oil level and condition.
4
Inspect the air intake system for leaks or blockages.
5
Examine the spark plugs and ignition coils for wear or damage.
6
Test the battery and charging system for proper voltage output.

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
•Spark plug socket
•Screwdrivers

Parts Required

•New spark plugs
•New ignition coils (if needed)
•Replacement gas cap (if needed)
•Air filter

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 gas cap for damage or improper sealing.
3
Check the engine oil level and condition.
4
Inspect the air intake system for leaks or blockages.
5
Examine the spark plugs and ignition coils for wear or damage.
6
Test the battery and charging system for proper voltage output.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to ensure safety.
Ensure the vehicle is parked on a level surface and the engine is cool.

2. Address Error Codes

Use the OBD-II scanner to retrieve and document error codes.
Research the codes to determine likely causes and affected systems.

3. Inspect and Replace Components

A. Gas Cap

Check the gas cap for tightness and condition.
If damaged, replace the gas cap with an OEM part.

B. Spark Plugs and Ignition Coils

Remove the engine cover if applicable.
Disconnect the electrical connectors from the ignition coils.
Unbolt and remove the ignition coils.
Remove old spark plugs using a spark plug socket.
Inspect the spark plugs for wear; replace if necessary.
Install new spark plugs and ignition coils, torquing the bolts to manufacturer specifications.

C. Air Intake System

Inspect the air filter and replace if dirty.
Check for cracks or loose connections in the intake hoses.
Replace any damaged hoses or clamps.

4. Clear Codes and Test Drive

Reconnect the negative battery terminal.
Use the OBD-II scanner to clear the error codes.
Start the engine and perform a test drive to check for reoccurrence of the check engine light.