why does my Ford F-150 13th Generation (2015-2020) check engine light come on after filling gas

Ford F-150 13th Generation (2015-2020)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

485 words

Problem Statement

Learn why your Ford F-150's check engine light comes on after refueling and how to fix it. Step-by-step guide with diagnostic and repair instructions.

Affected Component

Fuel System

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow engine to cool before opening the fuel system or inspecting components.

Symptoms

•Check engine light illuminated
•Fuel odor near the vehicle
•Reduced fuel efficiency
•Engine stalling or hesitation during acceleration
•Difficulty starting the engine after refueling

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific trouble codes.
2
Inspect the gas cap for proper sealing and any signs of damage.
3
Check the fuel filler neck for cracks or leaks.
4
Examine the EVAP (Evaporative Emission Control) system components for faults.
5
Inspect for any vacuum leaks in the intake system.
6
Test the fuel pressure using a fuel pressure gauge.

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
•Basic hand tools (screwdriver, pliers)
•Socket set
•Wrench

Parts Required

•New gas cap (if needed)
•New fuel filler neck (if damaged)
•New EVAP canister or valves (if faulty)

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 trouble codes.
2
Inspect the gas cap for proper sealing and any signs of damage.
3
Check the fuel filler neck for cracks or leaks.
4
Examine the EVAP (Evaporative Emission Control) system components for faults.
5
Inspect for any vacuum leaks in the intake system.
6
Test the fuel pressure using a fuel pressure gauge.

Solution

1. Preparation

Gather tools and parts required for the repair.
Disconnect the battery to ensure safety while working on the vehicle.

2. Inspect and Replace Gas Cap

Sub-steps:
- Remove the gas cap and inspect the rubber seal for wear or cracks.
- If damaged, replace the gas cap with a new one.
Tools Required: None specifically needed for this step.

3. Examine EVAP System Components

Sub-steps:
- Remove any protective covers if necessary to access EVAP components.
- Inspect the EVAP canister for damage or blockages.
- Check the EVAP purge valve and vent valve for proper operation; replace if faulty.
Tools Required: Basic hand tools (screwdriver, pliers).

4. Repair Fuel Filler Neck

Sub-steps:
- If the filler neck is cracked or damaged, remove it by disconnecting any attached hoses and fasteners.
- Install a new fuel filler neck by reversing the removal steps and ensuring all connections are secure.
Tools Required: Socket set, wrench.

5. Reconnect Battery and Clear Codes

Reconnect the battery and use the OBD-II scanner to clear any stored trouble codes.
Start the engine and ensure the check engine light remains off.