why does my Ford Explorer Fifth Generation (2011-2019) check engine light flash while driving

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

493 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix a flashing check engine light in a 2011-2019 Ford Explorer. Step-by-step guide with symptoms, diagnostic steps, 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

•Flashing check engine light
•Rough engine idle
•Loss of power during acceleration
•Increased fuel consumption
•Possible engine shaking or vibrations

Diagnostic Steps

1
Scan the vehicle's onboard diagnostics using an OBD-II scanner to retrieve trouble codes.
2
Inspect spark plugs and ignition coils for wear or damage.
3
Check for vacuum leaks in the intake system.
4
Examine fuel injectors for proper operation and clogs.
5
Assess engine compression to rule out internal engine issues.
6
Review recent maintenance history for any missed services or part replacements.

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

•Spark plugs
•Ignition coils
•Fuel injectors (if necessary)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's onboard diagnostics using an OBD-II scanner to retrieve trouble codes.
2
Inspect spark plugs and ignition coils for wear or damage.
3
Check for vacuum leaks in the intake system.
4
Examine fuel injectors for proper operation and clogs.
5
Assess engine compression to rule out internal engine issues.
6
Review recent maintenance history for any missed services or part replacements.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the vehicle's battery to ensure safety during repairs.
Allow the engine to cool before starting work.

2. Inspect and Replace Spark Plugs

Remove the engine cover if applicable.
Using a socket set, carefully remove the spark plug wires.
Use a spark plug socket to remove the spark plugs.
Inspect the spark plugs for signs of wear or damage; replace if necessary.
Install new spark plugs, ensuring they are properly gapped, and torque them to the manufacturer’s specifications (typically around 13-15 lb-ft).
Reattach the spark plug wires securely.

3. Check and Replace Ignition Coils

If misfiring is present, remove the ignition coils by unscrewing the retaining bolts.
Disconnect the electrical connectors from each coil.
Inspect the coils for cracks or carbon tracking; replace any faulty coils.
Install new ignition coils, ensuring they are seated properly and secure the bolts to the specified torque.

4. Inspect Fuel Injectors

Remove the fuel rail (if necessary) to access the injectors.
Check the injectors for clogs or leaks; clean or replace as needed.
Reinstall the fuel rail, ensuring all connections are tight and free of leaks.

5. Reconnect Battery and Clear Codes

Reconnect the vehicle's battery.
Use the OBD-II scanner to clear any stored trouble codes from the engine control unit.