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

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

540 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 Ford Explorer 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 battery before working on electrical systems.
•Allow the engine to cool before inspecting ignition components.

Symptoms

•Check engine light is flashing
•Engine misfire or rough idle
•Loss of power during acceleration
•Increased fuel consumption
•Possible engine vibrations or shaking

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Inspect ignition components such as spark plugs and ignition coils for wear or damage.
3
Check for fuel system issues, including fuel pressure and injector performance.
4
Examine the exhaust system for any obstructions or leaks.
5
Review the vehicle's service history for any recent changes or repairs that may contribute to the problem.

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
•Spark plug socket
•Fuel pressure gauge
•Basic hand tools

Parts Required

•Spark plugs
•Ignition coils
•Fuel filter
•Catalytic converter (if needed)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Inspect ignition components such as spark plugs and ignition coils for wear or damage.
3
Check for fuel system issues, including fuel pressure and injector performance.
4
Examine the exhaust system for any obstructions or leaks.
5
Review the vehicle's service history for any recent changes or repairs that may contribute to the problem.

Solution

1. Preparation

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

2. Inspect Ignition System

Tools Required: Socket set, spark plug socket
Remove the ignition coil and inspect for cracks or damage.
Remove spark plugs and check for wear, carbon buildup, or oil fouling.
Replace faulty ignition coils or spark plugs as needed, ensuring proper torque (typically 15-20 ft-lbs for spark plugs).

3. Check Fuel System

Tools Required: Fuel pressure gauge
Connect the fuel pressure gauge to the fuel rail.
Turn the ignition key to the ON position (do not start) and check the fuel pressure reading against the manufacturer's specifications (typically 30-45 psi).
If pressure is low, inspect the fuel pump and fuel filter for issues.
Replace the fuel filter if it's clogged, or the fuel pump if it fails to maintain proper pressure.

4. Examine Exhaust System

Tools Required: Basic hand tools
Visually inspect the exhaust system for any signs of leaks, such as hissing or increased noise.
Check for blockages in the catalytic converter or muffler by tapping and listening for rattling sounds.
If the catalytic converter is damaged, replace it with an OEM equivalent.

5. Clear Codes and Test Drive

Reconnect the battery terminal.
Use the OBD-II scanner to clear any stored codes.
Conduct a test drive to see if the check engine light reappears and monitor engine performance.