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

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

489 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 symptoms and solutions.

Affected Component

Engine

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.
•Allow the engine to cool completely before inspecting or removing any components.

Symptoms

•Check engine light illuminated on the dashboard
•Rough idle or engine misfire
•Decreased fuel efficiency
•Unusual engine noises (knocking or rattling)
•Failed emissions test (if applicable)
•Loss of power during acceleration

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Inspect the gas cap for damage or improper sealing; a loose cap can trigger the check engine light.
3
Check fluid levels, including engine oil, coolant, and transmission fluid.
4
Inspect the air intake system for blockages or leaks.
5
Examine the exhaust system for leaks or damage.
6
Verify the condition of spark plugs and ignition coils.

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
•Screwdrivers

Parts Required

•Gas cap (if damaged)
•Spark plugs
•Ignition coils (if necessary)
•Vacuum hoses or intake gaskets (if damaged)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Inspect the gas cap for damage or improper sealing; a loose cap can trigger the check engine light.
3
Check fluid levels, including engine oil, coolant, and transmission fluid.
4
Inspect the air intake system for blockages or leaks.
5
Examine the exhaust system for leaks or damage.
6
Verify the condition of spark plugs and ignition coils.

Solution

1. Preparation

Gather tools and parts.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the negative battery terminal to reset the system if necessary.

2. Address Error Codes

Connect the OBD-II scanner and retrieve the diagnostic trouble codes (DTC).
Refer to the service manual to understand the specific codes and their meanings.
Clear the codes and take the vehicle for a test drive to see if they return.

3. Inspect Components

Gas Cap Replacement (if necessary):
- Inspect and tighten or replace the gas cap if it is damaged or not sealing properly.
Spark Plug and Ignition Coil Replacement:
- Remove the ignition coil harness.
- Unbolt the ignition coils and replace them with new ones if faulty.
- Remove old spark plugs and replace them with new ones, ensuring correct torque (usually 13-15 lb-ft).

4. Check for Air Leaks

Inspect the intake manifold and vacuum hoses for leaks.
Replace any damaged hoses or gaskets.

5. Exhaust System Check

Inspect the exhaust system for any visible signs of damage or leaks.
Repair or replace any broken components.