how to fix Ford Explorer Sixth Generation (2020-present) check engine light without a scanner

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

477 words

Problem Statement

Learn how to fix the check engine light on a Ford Explorer Sixth Generation (2020-present) without a scanner. Step-by-step guide with diagnostic steps.

Affected Component

Engine

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the engine is cool before opening the hood to prevent burns.

Symptoms

•Check engine light illuminated
•Reduced engine performance
•Erratic engine idling
•Poor fuel economy
•Unusual engine noises

Diagnostic Steps

1
Check the engine bay and dashboard for any visible issues such as loose hoses, disconnected wires, or leaks.
2
Ensure the fuel cap is tightly secured, as a loose or damaged gas cap can trigger the check engine light.
3
Verify that all essential fluids (engine oil, coolant, transmission fluid) are at proper levels, as low fluids can cause alerts.
4
Run the engine and listen for any irregular sounds that could indicate a mechanical problem.
5
Check for any excessive exhaust smoke or unusual smells that may indicate engine problems or emissions issues.

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

•Gloves
•Flashlight

Parts Required

•New gas cap (if damaged)

Related Faults

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Diagnostic Steps

1
Check the engine bay and dashboard for any visible issues such as loose hoses, disconnected wires, or leaks.
2
Ensure the fuel cap is tightly secured, as a loose or damaged gas cap can trigger the check engine light.
3
Verify that all essential fluids (engine oil, coolant, transmission fluid) are at proper levels, as low fluids can cause alerts.
4
Run the engine and listen for any irregular sounds that could indicate a mechanical problem.
5
Check for any excessive exhaust smoke or unusual smells that may indicate engine problems or emissions issues.

Solution

1. Preparation

Tools Required:
- Gloves
- Flashlight
Make sure to park the vehicle on a flat surface and turn off the engine. Allow the engine to cool before beginning any work.

2. Inspect the Gas Cap

Sub-steps:
- Locate the gas cap on the fuel filler neck.
- Unscrew the gas cap, inspect for cracks or damage, and clean the sealing surface.
- Reinstall the gas cap and ensure it is tightened securely (click sound).

3. Fluid Level Check

Sub-steps:
- Open the hood and locate the dipsticks for engine oil and transmission fluid.
- Remove the dipstick, wipe it clean, reinsert it, and then remove it again to check the fluid level against the markings.
- For coolant, check the reservoir level and ensure it is within the marked range.

4. Address Any Visible Issues

Sub-steps:
- Look for any loose or damaged wiring harnesses or vacuum hoses.
- Tighten any loose connectors and replace any damaged components before starting the engine again.

5. Test Drive

Sub-steps:
- Start the engine and let it idle for a few minutes.
- Take the vehicle for a short drive to see if the check engine light stays off.