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

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

487 words

Problem Statement

Learn how to diagnose and fix the check engine light issue after refueling in your Ford Explorer. Step-by-step guide with symptoms and solutions.

Affected Component

Fuel System

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 any heated components.

Symptoms

•Check engine light illuminated
•Potential for rough idle after refueling
•Decreased fuel efficiency
•Fuel smell near the filler cap
•Possible engine stalling or hesitation during acceleration

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Inspect the fuel filler cap for cracks, improper sealing, or damage.
3
Check for any fuel leaks in the fuel lines or around the fuel injectors.
4
Test the evaporative emissions control system (EVAP) for leaks using a smoke machine.
5
Inspect the fuel tank pressure sensor for proper functioning.
6
Verify the condition of the purge valve and canister for blockages or failures.

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
•Smoke machine
•Multimeter
•Basic hand tools (sockets, wrenches, etc.)

Parts Required

•Fuel filler cap (if damaged)
•Fuel lines or components (if leaks are found)
•Evaporative emissions components (if needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Inspect the fuel filler cap for cracks, improper sealing, or damage.
3
Check for any fuel leaks in the fuel lines or around the fuel injectors.
4
Test the evaporative emissions control system (EVAP) for leaks using a smoke machine.
5
Inspect the fuel tank pressure sensor for proper functioning.
6
Verify the condition of the purge valve and canister for blockages or failures.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is turned off.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace the Fuel Filler Cap

Sub-steps:
- Remove the fuel filler cap by turning it counterclockwise.
- Inspect the cap for damage or wear; replace if necessary.
- Clean the sealing surface on the filler neck with a clean rag.
- Reinstall the new or existing cap, ensuring it clicks securely.

3. Check for Fuel Leaks

Sub-steps:
- Visually inspect fuel lines for any signs of leaks or damage.
- Use a fuel pressure gauge to check for proper pressure in the fuel system.
- If leaks are found, replace damaged lines or components.

4. Test the EVAP System

Sub-steps:
- Connect a smoke machine to the EVAP system using a diagnostic port.
- Activate the smoke machine and observe for smoke escaping from any points in the system.
- Repair or replace any components where smoke escapes, including the purge valve and canister.

5. Inspect the Fuel Tank Pressure Sensor

Sub-steps:
- Locate the fuel tank pressure sensor on the fuel tank.
- Disconnect the electrical connector and test the sensor using a multimeter.
- If the sensor is out of specification, replace it.

6. Reconnect Battery and Clear Codes

Sub-steps:
- Reconnect the negative battery terminal.
- Use the OBD-II scanner to clear any stored fault codes.
- Start the engine and check the operation of the check engine light.

Tools Required:

OBD-II scanner
Fuel pressure gauge
Smoke machine
Multimeter
Basic hand tools (sockets, wrenches, etc.)

Parts Required:

Fuel filler cap (if damaged)
Fuel lines or components (if leaks are found)
Evaporative emissions components (if needed)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on electrical components.
Allow the engine to cool before inspecting any heated components.