my Ford F-150 13th Generation (2015-2020) fuel gauge is not working what to do

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

514 words

Problem Statement

Learn how to diagnose and fix a non-functioning fuel gauge in a 2015-2020 Ford F-150. 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 servicing to prevent fuel spillage.

Symptoms

•Fuel gauge needle remains at empty or full regardless of actual fuel level
•"Check Gauge" warning light illuminated on the dashboard
•Inconsistent readings after refueling
•Difficulty in determining fuel levels leading to potential running out of fuel
•Fuel warning light does not illuminate when low on fuel

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any fault codes related to the fuel system.
2
Inspect the fuel gauge fuse to ensure it is not blown.
3
Check the wiring and connections at the fuel tank and gauge cluster for any damage or corrosion.
4
Test the fuel sending unit in the fuel tank to determine if it is functioning correctly.
5
Verify the operation of the gauge by applying direct power to it, if possible.

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
•Fuse puller
•Socket set
•Jack and jack stands
•Screwdrivers
•Multimeter (optional)

Parts Required

•Fuel sending unit (if replacement is necessary)
•Fuel gauge fuse (if blown)

Related Faults

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Symptoms

•Fuel gauge needle remains at empty or full regardless of actual fuel level

•"Check Gauge" warning light illuminated on the dashboard

•Inconsistent readings after refueling

•Difficulty in determining fuel levels leading to potential running out of fuel

•Fuel warning light does not illuminate when low on fuel

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any fault codes related to the fuel system.
2
Inspect the fuel gauge fuse to ensure it is not blown.
3
Check the wiring and connections at the fuel tank and gauge cluster for any damage or corrosion.
4
Test the fuel sending unit in the fuel tank to determine if it is functioning correctly.
5
Verify the operation of the gauge by applying direct power to it, if possible.

Solution

1. Preparation

Gather tools and parts required for the repair.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Fuse

Locate the fuse box (usually under the dashboard or in the engine compartment).
Identify the fuse related to the fuel gauge (refer to the owner's manual).
Remove the fuse using a fuse puller and inspect it. If blown, replace it with a new fuse of the same amperage.

3. Fuel Sending Unit Replacement

Raise the vehicle using a jack and secure it with jack stands.
Remove the fuel tank by disconnecting the fuel lines and electrical connectors. Be cautious of fuel spillage.
Carefully unbolt and lower the fuel tank to access the sending unit.
Remove the old fuel sending unit from the tank, taking note of its orientation.
Install the new sending unit, ensuring proper gasket placement to prevent leaks.
Reinstall the fuel tank, reconnecting all lines and electrical connectors securely.

4. Gauge Cluster Testing

Reconnect the negative battery terminal.
Turn the ignition to the "ON" position without starting the engine.
Observe the fuel gauge to ensure it moves to the correct level.
If necessary, recalibrate the gauge (consult manufacturer’s service manual for specifics).