why does my Ford Explorer Sixth Generation (2020-present) check engine light keep coming on

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

575 words

Problem Statement

Learn how to diagnose and fix the check engine light issue in Ford Explorer Sixth Generation (2020-present). Step-by-step guide with diagnostic procedures.

Affected Component

Engine

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow engine to cool before opening any components.

Symptoms

•Check engine light illuminated
•Vehicle may experience rough idling
•Possible loss of power during acceleration
•Decreased fuel efficiency
•Engine stalling or hesitation
•Increased emissions

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific trouble codes.
2
Inspect the gas cap for proper sealing and signs of wear or damage.
3
Check engine oil level and condition; look for signs of contamination.
4
Examine the air filter for dirt or blockages that could affect engine performance.
5
Inspect ignition system components (spark plugs, ignition coils) for wear or failure.
6
Test fuel system pressure to ensure adequate supply to the engine.

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

Parts Required

•New gas cap (if needed)
•Air filter
•Spark plugs
•Ignition coils (if needed)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific trouble codes.
2
Inspect the gas cap for proper sealing and signs of wear or damage.
3
Check engine oil level and condition; look for signs of contamination.
4
Examine the air filter for dirt or blockages that could affect engine performance.
5
Inspect ignition system components (spark plugs, ignition coils) for wear or failure.
6
Test fuel system pressure to ensure adequate supply to the engine.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a flat surface and engage the parking brake.
Disconnect the negative battery terminal to ensure safety.

2. Scan for Error Codes

Connect the OBD-II scanner to the vehicle’s diagnostic port.
Turn the ignition key to the "ON" position without starting the engine.
Retrieve the error codes and document them for further analysis.

3. Inspect and Replace Components

A. Gas Cap

Remove the gas cap and check for cracks or damage.
If necessary, replace it with a new one.
Ensure it seals tightly when reinstalled.

B. Air Filter

Open the air filter housing and remove the air filter.
Inspect for dirt and debris; replace with a new filter if dirty.
Reinstall the housing securely.

C. Spark Plugs and Ignition Coils

Remove the ignition coils from the spark plugs.
Check the condition of the spark plugs; replace if worn or fouled.
Reinstall new spark plugs to the manufacturer’s torque specifications (usually around 12-15 ft-lbs).
Reattach ignition coils securely.

D. Fuel System Pressure

Connect a fuel pressure gauge to the fuel rail test port.
Turn the ignition to the "ON" position (do not start) and check the pressure reading against manufacturer specifications (typically 30-50 psi).
If pressure is low, inspect the fuel pump, filter, and lines for blockages or failures.

4. Reconnect Battery and Clear Codes

Reconnect the negative battery terminal securely.
Use the OBD-II scanner to clear any error codes from the system.