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

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

604 words

Problem Statement

Learn how to diagnose and fix the check engine light issue in Ford Explorer (2020-present). 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 systems
•Allow the engine to cool before working on the intake or ignition components

Symptoms

•Check engine light illuminated
•Rough idling
•Decreased fuel efficiency
•Unusual engine noises (knocking or pinging)
•Stalling or hesitation during acceleration
•Increased emissions detected

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to retrieve any diagnostic trouble codes (DTCs)
2
Inspect the gas cap for proper sealing; a loose or damaged cap can trigger the check engine light
3
Check fluid levels (engine oil, coolant, transmission fluid) to ensure they are within acceptable ranges
4
Inspect the ignition system components, including spark plugs and ignition coils, for wear or damage
5
Examine the air intake system for blockages or leaks, including the air filter and intake hoses
6
Test the fuel system pressure to ensure the fuel pump and injectors are functioning correctly

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
•Multimeter
•Fuel pressure gauge
•Basic hand tools

Parts Required

•Spark plugs
•Ignition coils (if faulty)
•Fuel filter (if needed)
•Air filter

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to retrieve any diagnostic trouble codes (DTCs)
2
Inspect the gas cap for proper sealing; a loose or damaged cap can trigger the check engine light
3
Check fluid levels (engine oil, coolant, transmission fluid) to ensure they are within acceptable ranges
4
Inspect the ignition system components, including spark plugs and ignition coils, for wear or damage
5
Examine the air intake system for blockages or leaks, including the air filter and intake hoses
6
Test the fuel system pressure to ensure the fuel pump and injectors are functioning correctly

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, torque wrench, multimeter, fuel pressure gauge, basic hand tools.
Ensure the vehicle is parked on a level surface.
Disconnect the battery negative terminal to prevent electrical shock during repairs.

2. Repair Code Issues

Sub-steps:
1. Use the OBD-II scanner to identify the specific DTCs.
2. Research the error codes to determine the appropriate repair actions needed.
3. Address any specific issues related to the codes, such as replacing faulty sensors or components as necessary.

3. Inspect and Replace Spark Plugs

Sub-steps:
1. Remove the engine cover (if applicable) using a socket set.
2. Disconnect the ignition coil connectors and remove the coils.
3. Remove the old spark plugs using a spark plug socket; inspect for wear.
4. Install new spark plugs, ensuring they are gapped correctly as per manufacturer specifications.
5. Reinstall the ignition coils and engine cover.

4. Fuel System Inspection

Sub-steps:
1. Connect the fuel pressure gauge to the fuel rail.
2. Turn the ignition to the "on" position without starting the engine to check fuel pressure.
3. Compare the reading to manufacturer specifications; replace the fuel pump or filters if pressure is low.
4. Test the fuel injectors for proper operation, replacing any that are clogged or malfunctioning.

5. Check Air Intake System

Sub-steps:
1. Inspect the air filter; replace if dirty or clogged.
2. Check the intake hoses for cracks or leaks.
3. Clean the throttle body using appropriate throttle body cleaner.
4. Reassemble the air intake system, ensuring all connections are secure.