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

514 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 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 inspecting components.

Symptoms

•Check engine light flashing
•Poor acceleration or engine performance
•Rough idle or engine vibrations
•Increased fuel consumption
•Exhaust fumes with a strong odor

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific trouble codes.
2
Inspect ignition system components, including spark plugs, ignition coils, and wiring.
3
Check for vacuum leaks in hoses and intake manifold.
4
Examine fuel system components, including fuel injectors and fuel pressure.
5
Test engine compression to rule out mechanical issues.

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
•Fuel pressure gauge
•Compression tester

Parts Required

•Spark plugs (if worn)
•Ignition coils (if faulty)
•Vacuum hoses (if damaged)
•Fuel injectors (if malfunctioning)
•Fuel filter (if clogged)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific trouble codes.
2
Inspect ignition system components, including spark plugs, ignition coils, and wiring.
3
Check for vacuum leaks in hoses and intake manifold.
4
Examine fuel system components, including fuel injectors and fuel pressure.
5
Test engine compression to rule out mechanical issues.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the engine is off.
Disconnect the battery to prevent electrical shorts.

2. Scan for Trouble Codes

Use an OBD-II scanner to retrieve error codes.
Document the codes for further diagnosis.

3. Inspect Ignition System

Tools Required: Socket set, torque wrench.
Remove the engine cover (if applicable).
Check spark plugs: remove and inspect for wear or damage.
Test ignition coils: use a multimeter to check resistance; replace if necessary.
Reinstall spark plugs and coils securely.

4. Check for Vacuum Leaks

Visually inspect all vacuum hoses for cracks or disconnections.
Use a smoke machine or carburetor cleaner to identify leaks while the engine is running.
Replace any damaged hoses or gaskets.

5. Examine Fuel System

Tools Required: Fuel pressure gauge.
Check fuel pressure at the fuel rail; compare with manufacturer specifications.
Inspect fuel injectors for proper operation; clean or replace as needed.
Ensure fuel filter is not clogged and replace if necessary.

6. Test Engine Compression

Tools Required: Compression tester.
Remove spark plugs for access.
Insert compression tester into each cylinder and crank the engine.
Compare readings to manufacturer specifications; low compression indicates internal issues.