how to fix a Ford F-150 13th Generation (2015-2020) fuel gauge not working

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

495 words

Problem Statement

Learn how to diagnose and fix the fuel gauge issue in Ford F-150 (2015-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Fuel System

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the fuel system to depressurize before disconnecting fuel lines.

Symptoms

•Fuel gauge shows empty despite having fuel in the tank
•Fuel gauge fluctuates erratically while driving
•Check engine light illuminated
•Inability to accurately estimate fuel range
•Fuel level warning light remains on

Diagnostic Steps

1
Scan the vehicle's OBD-II system for error codes to identify any related issues.
2
Inspect the fuel gauge cluster for physical damage or loose connections.
3
Verify the fuel sender unit is functioning by checking resistance with a multimeter.
4
Check the wiring and connectors between the fuel sender unit and the instrument cluster for corrosion or damage.
5
Inspect the vehicle's fuel pump relay and fuse for proper operation.
6
Test the battery voltage to ensure it is supplying adequate power to the gauge system.

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
•Multimeter
•Socket set
•Flat-head screwdriver
•Safety glasses

Parts Required

•Fuel sender unit (if faulty)
•Fuel lines (if damaged)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan the vehicle's OBD-II system for error codes to identify any related issues.
2
Inspect the fuel gauge cluster for physical damage or loose connections.
3
Verify the fuel sender unit is functioning by checking resistance with a multimeter.
4
Check the wiring and connectors between the fuel sender unit and the instrument cluster for corrosion or damage.
5
Inspect the vehicle's fuel pump relay and fuse for proper operation.
6
Test the battery voltage to ensure it is supplying adequate power to the gauge system.

Solution

1. Preparation

Gather tools: OBD-II scanner, multimeter, socket set, flat-head screwdriver, and safety glasses.
Disconnect the vehicle's battery to prevent electrical shorts.

2. Access the Fuel Sender Unit

Step 1: Raise the vehicle using a jack and secure it on jack stands.
Step 2: Disconnect the fuel pump connector and the fuel lines leading to the fuel tank.
Step 3: Remove the fuel tank by unbolting the straps holding it in place. Ensure to support the tank while doing this.

3. Inspect the Fuel Sender Unit

Step 1: Remove the fuel sender unit from the fuel tank by unscrewing it.
Step 2: Inspect the float arm for any signs of damage or obstruction.
Step 3: Use a multimeter to measure the resistance across the sender unit terminals; it should vary when moving the float arm up and down.
Step 4: If the readings are incorrect, replace the fuel sender unit.

4. Reassemble and Test

Step 1: Reinstall the fuel sender unit back into the fuel tank, ensuring a secure fit.
Step 2: Reconnect the fuel lines and electrical connectors.
Step 3: Reinstall the fuel tank and secure it with the straps.
Step 4: Reconnect the battery and start the vehicle.