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

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

546 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 on Ford Explorer (2011-2019). 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 inspecting or working on the exhaust system.

Symptoms

•Flashing check engine light
•Engine misfire or rough running
•Decreased acceleration or power loss
•Increased fuel consumption
•Possible strong odor of fuel

Diagnostic Steps

1
Scan the vehicle using an OBD-II scanner to retrieve error codes.
2
Inspect the ignition system components (spark plugs, coils) for damage or wear.
3
Check for vacuum leaks in the intake system and around the throttle body.
4
Measure fuel pressure to ensure it is within specifications.
5
Inspect the exhaust system for any blockages or leaks.
6
Review recent maintenance records for any recent repairs that may relate to the issue.

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
•Fuel pressure gauge
•Throttle body cleaner

Parts Required

•Spark plugs
•Ignition coils
•Vacuum hoses
•Fuel pump (if necessary)
•Catalytic converter (if necessary)

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Diagnostic Steps

1
Scan the vehicle using an OBD-II scanner to retrieve error codes.
2
Inspect the ignition system components (spark plugs, coils) for damage or wear.
3
Check for vacuum leaks in the intake system and around the throttle body.
4
Measure fuel pressure to ensure it is within specifications.
5
Inspect the exhaust system for any blockages or leaks.
6
Review recent maintenance records for any recent repairs that may relate to the issue.

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 any electrical shorts.

2. Address Ignition System Issues

Check Spark Plugs:
- Remove spark plug wires using a spark plug socket.
- Inspect each spark plug for wear or fouling; replace if necessary.
Inspect Ignition Coils:
- Remove ignition coils one at a time, checking for cracks or corrosion.
- Replace faulty coils with new ones.

3. Check for Vacuum Leaks

Inspect Hoses:
- Visually inspect all vacuum hoses for cracks or disconnections.
- Replace damaged hoses.
Throttle Body Inspection:
- Clean the throttle body using throttle body cleaner and a soft cloth.
- Reinstall and ensure all connections are secure.

4. Test Fuel Pressure

Installation:
- Connect a fuel pressure gauge to the fuel rail test port.
Testing:
- Turn the ignition key to the "ON" position (do not start the engine) and check the pressure.
- Ensure the pressure is within manufacturer specifications (usually 30-50 PSI for most Ford engines).
Replacement:
- If pressure is low, inspect the fuel pump and replace if necessary.

5. Inspect Exhaust System

Visual Inspection:
- Check for any visible signs of damage or leaks in the exhaust system.
Test for Blockages:
- If necessary, remove the catalytic converter for inspection and clean or replace if needed.