why does my Ford Explorer Sixth Generation (2020-present) check engine light stay on after clearing

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

508 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 the persistent check engine light issue in the 2020-present 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 components.
•Allow the engine to cool before inspecting the exhaust system.

Symptoms

•Check engine light illuminated
•Possible rough idle or stalling
•Poor acceleration or loss of power
•Increased fuel consumption
•Emissions test failure
•Potentially unusual engine noises

Diagnostic Steps

1
Scan the vehicle’s onboard diagnostics (OBD-II) system for error codes using a diagnostic scanner.
2
Record the specific error codes that are present; take note of any pending codes.
3
Inspect the vehicle's fuel system including fuel injectors and fuel pressure.
4
Check for fault in the ignition system, including spark plugs and ignition coils.
5
Inspect the vehicle's sensors (MAF, O2) and wiring for damage or corrosion.
6
Examine the exhaust system for leaks or blockages that may affect sensor readings.

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
•Fuel pressure gauge
•Socket set
•Torque wrench
•MAF sensor cleaner
•Basic hand tools

Parts Required

•Oxygen sensor (if applicable)
•Spark plugs (if applicable)
•Ignition coils (if applicable)
•Fuel filter (if applicable)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan the vehicle’s onboard diagnostics (OBD-II) system for error codes using a diagnostic scanner.
2
Record the specific error codes that are present; take note of any pending codes.
3
Inspect the vehicle's fuel system including fuel injectors and fuel pressure.
4
Check for fault in the ignition system, including spark plugs and ignition coils.
5
Inspect the vehicle's sensors (MAF, O2) and wiring for damage or corrosion.
6
Examine the exhaust system for leaks or blockages that may affect sensor readings.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a level surface and the parking brake is engaged.

2. Address Error Codes

Sub-step 1: Refer to the OBD-II error codes obtained earlier and research to determine the root cause.
Sub-step 2: For codes related to the oxygen sensor, replace the sensor with a new OEM part.
Sub-step 3: For misfire codes, inspect and replace faulty spark plugs or ignition coils as needed.

3. Inspect and Repair the Fuel System

Sub-step 1: Check fuel pressure using a fuel pressure gauge; ensure it meets manufacturer specifications.
Sub-step 2: If pressure is low, inspect the fuel pump and replace if necessary.
Sub-step 3: Clean or replace fuel injectors if they are clogged.

4. Sensor Inspection

Sub-step 1: Visually inspect the wiring and connectors of the MAF and O2 sensors.
Sub-step 2: Clean the MAF sensor with MAF cleaner; replace if malfunctioning.
Sub-step 3: Replace any damaged wiring or connectors.

5. Exhaust System Check

Sub-step 1: Inspect the exhaust system for leaks, especially around the manifold and O2 sensor locations.
Sub-step 2: Repair or replace any damaged exhaust components.

Tools Required:

OBD-II scanner
Fuel pressure gauge
Socket set
Torque wrench
MAF sensor cleaner
Basic hand tools

Parts Required:

Oxygen sensor (if applicable)
Spark plugs (if applicable)
Ignition coils (if applicable)
Fuel filter (if applicable)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on electrical components.
Allow the engine to cool before inspecting the exhaust system.