why is my Ford Explorer Sixth Generation (2020-present) engine light flashing

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

538 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 your Ford Explorer (2020-2023). Step-by-step guide with symptoms, diagnostics, 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 components.
•Allow the engine to cool before inspecting the exhaust system.

Symptoms

•Flashing check engine light
•Rough engine idle
•Loss of power during acceleration
•Misfiring sound from the engine
•Increased fuel consumption
•Unusual exhaust smoke (black or white)

Diagnostic Steps

1
Scan the vehicle’s OBD-II system using a scanner to retrieve any stored error codes.
2
Inspect the ignition system components (spark plugs, ignition coils) for signs of wear or damage.
3
Check fuel pressure with a fuel pressure gauge to ensure it meets manufacturer specifications.
4
Inspect the air intake system for any leaks or blockages.
5
Examine the exhaust system for any signs of blockage or damage.
6
Review recent maintenance records for any recent changes that might affect engine performance.

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
•Fuel pressure gauge
•Multimeter
•Torque wrench

Parts Required

•Spark plugs
•Ignition coils (if faulty)
•Fuel filter (if applicable)

Related Faults

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Diagnostic Steps

1
Scan the vehicle’s OBD-II system using a scanner to retrieve any stored error codes.
2
Inspect the ignition system components (spark plugs, ignition coils) for signs of wear or damage.
3
Check fuel pressure with a fuel pressure gauge to ensure it meets manufacturer specifications.
4
Inspect the air intake system for any leaks or blockages.
5
Examine the exhaust system for any signs of blockage or damage.
6
Review recent maintenance records for any recent changes that might affect engine performance.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, fuel pressure gauge, multimeter, torque wrench.
Disconnect the negative battery terminal to prevent electrical shorts while working on the vehicle.

2. Inspect and Replace Ignition Components

Sub-steps:
1. Remove the engine cover (if applicable) using a socket set.
2. Disconnect the ignition coil connectors and remove the ignition coils by unscrewing them.
3. Inspect the spark plugs; if they are worn or fouled, replace them with OEM parts.
4. If the ignition coils are defective (check with a multimeter), replace them with new ones.
5. Reinstall the ignition coils and reconnect the connectors.

3. Check and Adjust Fuel Pressure

Sub-steps:
1. Locate the fuel rail and connect the fuel pressure gauge to the test port.
2. Turn the ignition to the "On" position (do not start the engine) to check the pressure reading.
3. If the pressure is below specifications, check the fuel pump and filter for issues and replace as necessary.
4. Disconnect the fuel pressure gauge after testing and ensure all connections are secure.

4. Inspect Air Intake and Exhaust Systems

Sub-steps:
1. Visually inspect the air intake hoses for cracks or disconnections.
2. Remove the air filter and check for blockages; replace if dirty.
3. Inspect the exhaust for any visible leaks or damage, paying particular attention to the catalytic converter.
4. If a blockage is suspected in the exhaust system, consult with a professional for further inspection.