2014 F150 Fuel Pump Fuse: Complete Guide to Diagnosis, Repair, and Prevention
f your 2014 Ford F-150 won’t start, the fuel pump fuse is one of the first things you should check. The most common cause is a known design flaw in the fuse box that causes the 20-amp fuse for the fuel pump to overheat and melt. The fix is a fuse relocation kit, but if your fuel pump has already been damaged, replacing it with a high-quality unit like KEMSO is the best long-term solution.
The 2014 Ford F-150 is a reliable truck, but it has a well-documented issue with the fuel pump fuse. Many owners experience a crank-no-start situation where the engine turns over but won’t fire because the fuel pump isn’t getting power. This guide walks you through everything you need to know about the fuel pump fuse on the 2014 F-150, including location, symptoms of failure, root causes, repair options, and when to replace the fuel pump itself.
Where Is the Fuel Pump Fuse on a 2014 Ford F-150?
The fuel pump fuse on the 2014 Ford F-150 is located in the Power Distribution Box under the hood. This box is on the driver’s side of the engine compartment, near the battery. The specific fuse is Fuse F27, which is a 20-amp mini fuse.
According to the factory fuse layout, fuse F27 is labeled “Fuel pump relay power” and provides power to the fuel pump relay and the fuel pump control module. The fuse is a standard mini blade fuse with a yellow color, indicating its 20-amp rating.
If you need to locate it quickly, remove the cover of the power distribution box and look for the diagram printed on the inside of the lid. Fuse F27 is usually positioned in the second row from the top, near the middle of the box.
What Does the Fuel Pump Fuse Do?
The fuel pump fuse protects the electrical circuit that powers the fuel pump. When you turn the ignition key to the “On” position, the fuel pump relay sends power through this fuse to the fuel pump control module, which then activates the pump inside the fuel tank. The pump pressurizes the fuel system so the injectors can deliver fuel to the engine.
Without this fuse working properly, the fuel pump cannot operate, and the engine will not start. The fuse acts as a safety device: if there is a short circuit or the pump draws too much current, the fuse blows to prevent damage to the wiring or a potential fire.
Symptoms of a Blown Fuel Pump Fuse
A blown fuel pump fuse can cause several noticeable symptoms. The most obvious is that the engine cranks but does not start. You may also notice:
Engine cranks but won’t start. This is the most common symptom. You turn the key, the starter engages, the engine spins over, but it never fires up. Without fuel pressure, combustion cannot occur.
No fuel pump priming sound. When you turn the ignition to the “On” position (without starting the engine), you should hear a brief humming or whirring sound from the rear of the truck. That is the fuel pump pressurizing the system. If you don’t hear that sound, the pump may not be getting power.
Longer cranking time before starting. Some owners report that before the fuse blows completely, the truck takes an extra cycle of cranking to start. This indicates the fuse connection is already getting weak or overheating.
Check Engine Light with certain diagnostic trouble codes. The truck’s computer may store codes related to fuel pump circuit issues. Common codes include P0230 (fuel pump primary circuit malfunction), P0627 (fuel pump control circuit), or P025A (fuel pump control module performance).
Why Does the Fuel Pump Fuse Blow on the 2014 F-150?
There are several reasons why the fuel pump fuse may blow on your 2014 F-150. Some are related to the fuse box design itself, while others point to problems with the fuel pump or related components.
1. Known Design Flaw in the Fuse Box
The most common cause is a design flaw in the power distribution box. The factory fuse holder for Fuse F27 uses contact points that are not sufficient to handle the continuous current draw of the fuel pump. Over time, these contacts overheat, causing the plastic around the fuse to melt. Once the fuse melts or the connection degrades, the fuse blows, and the fuel pump stops working.
This is not a random failure. Ford issued a Technical Service Bulletin (TSB 15-0137) to address this problem. The fix involves relocating the fuel pump fuse to a different position in the fuse box using a relocation kit. Many owners and mechanics consider this a design defect that Ford should have recalled but never did.
2. Failing Fuel Pump Drawing Too Much Current
If the fuel pump itself is wearing out, it may draw more electrical current than it should. As the pump’s internal components wear, the motor works harder to maintain fuel pressure. This increased current draw can overload the 20-amp fuse and cause it to blow.
A failing pump often shows other symptoms before the fuse blows, such as intermittent loss of power during acceleration, surging, or difficulty starting when the fuel tank is low. If your truck has high mileage (over 100,000 miles), the pump may be nearing the end of its service life.
3. Clogged Fuel Filter or Restricted Fuel Flow
A severely clogged fuel filter forces the fuel pump to work harder to push fuel through the system. This extra resistance increases the electrical load on the pump, which can blow the fuse. The fuel filter on the 2014 F-150 is part of the fuel pump module assembly and is not serviceable separately on most models, but debris in the tank can still cause restrictions.
4. Short Circuit in the Wiring
Damaged, frayed, or exposed wires in the fuel pump circuit can cause a short circuit. If the positive wire rubs against the truck’s chassis or a grounded component, it creates a direct path to ground, causing a massive current surge that blows the fuse instantly. Wiring issues are more common on trucks that have been in accidents, have aftermarket modifications, or have rust damage.
5. Incorrect Fuse Amperage
If someone previously replaced the fuel pump fuse with one that has a lower amperage rating than the specified 20 amps, that fuse will blow under normal operating conditions. Always use a 20-amp yellow mini fuse for this circuit. Never use a higher amperage fuse, as that can cause wire damage and fire risk.
How to Diagnose a Blown Fuel Pump Fuse
Before you start buying parts, you need to confirm that the fuse is actually blown and understand why.
Step 1: Check the fuse visually. Open the power distribution box and pull out fuse F27. Hold it up to the light. If the metal strip inside the fuse is broken or melted, the fuse is blown. You may also see black soot or scorch marks inside the plastic.
Step 2: Inspect the fuse holder. Look at the two metal prongs inside the fuse box where the fuse plugs in. If you see melted plastic, discoloration, or corrosion, you have the overheating issue. This means the fuse box itself has damage that needs to be addressed with a relocation kit.
Step 3: Listen for the fuel pump. After replacing the fuse with a new 20-amp fuse, turn the ignition to “On” and listen for the fuel pump priming sound at the rear of the truck. If you hear it, the pump is getting power, and the problem may have been just a weak fuse. If you don’t hear it, the pump or its wiring is still faulty.
Step 4: Check for diagnostic trouble codes. If you have a scan tool, check for codes related to the fuel pump circuit. Codes like P0230 or P0627 point to electrical problems. If you see misfire codes like P0201-P0208, those can also be caused by fuel delivery issues.
Step 5: Test for power at the pump. If the fuse is good and you still don’t hear the pump, you need to check for power at the fuel pump connector. This requires a multimeter and some electrical knowledge. If there is power but the pump doesn’t run, the pump is dead. If there is no power, the problem is in the relay, wiring, or control module.
The Proper Fix: Fuse Relocation Kit
If you find that the fuse holder in the power distribution box is melted or overheated, you need a fuse relocation kit. This is the official fix recommended by Ford in TSB 15-0137.
The relocation kit, part number EL3Z-14293-A (also sold as 926-034), moves the fuel pump fuse from its original position to a new, unused position in the fuse box. The kit includes a new fuse holder, wiring harness, and connectors that bypass the damaged contacts. By moving the fuse, you eliminate the overheating problem permanently.
Many aftermarket versions of this kit are available, and they cost around $10 to $30 depending on the brand. The installation requires removing the power distribution box, opening it from the bottom, and splicing the new wires into the existing circuit. It is a moderate difficulty job that most DIYers can handle with basic tools and a video guide.
However, not all trucks need this fix. According to the Ford service bulletin, you should only install the relocation kit if:
- Your truck exhibits a crank-no-start condition, loss of RPM, or a check engine light with fuel pump-related codes
- The fuse terminal at location F27 shows signs of excessive heat, such as melted plastic
If you inspect your fuse and see no signs of heat damage, and your truck runs fine, you may not need the relocation kit. Some experienced owners advise against doing it preventively because the installation involves cutting wires and opening the fuse box, which can introduce new problems if not done carefully.
When to Replace the Fuel Pump Instead
If your fuel pump fuse keeps blowing even after you install the relocation kit, the pump itself is likely failing. A bad pump draws excessive current and will blow any fuse you put in. In this case, you need to replace the fuel pump.
Other signs that the fuel pump needs replacement include:
- The engine starts but stalls shortly after
- Loss of power when climbing hills or towing
- Surging or hesitation during acceleration
- Whining noise coming from the fuel tank area
- The truck runs fine when the tank is full but struggles when the tank is low
Replacing the fuel pump on a 2014 F-150 is a significant job. The pump is located inside the fuel tank, which means you need to drop the tank or access it through a panel in the truck bed. The labor time is typically two to four hours, and the cost of a new pump ranges from $80 to $200 for a quality replacement.
How to Prevent Fuel Pump Fuse Problems in the Future
Prevention starts with good maintenance and awareness. Here are practical steps you can take to avoid being stranded by a blown fuel pump fuse:
Keep your fuel tank above a quarter full. Running the tank low frequently can cause the fuel pump to overheat because fuel helps cool the pump. A hot pump draws more current and stresses the fuse.
Change your fuel filter regularly. On models where the fuel filter is serviceable, replace it every 30,000 to 50,000 miles. A clean filter reduces the load on the pump.
Use quality fuel. Cheap or contaminated fuel can leave deposits in the tank and pump, causing premature wear.
Inspect the fuse periodically. If you know about the F27 issue, it only takes a minute to pull the fuse and check for signs of heat damage. Catching it early allows you to install the relocation kit before the fuse blows at an inconvenient time.
Replace the fuel pump before it fails. If your truck has over 150,000 miles on the original pump, consider replacing it as preventive maintenance. A new pump ensures proper current draw and reduces the risk of blowing fuses.
Recommended Product: KEMSO Fuel Pump for Your 2014 F-150
If your 2014 Ford F-150 needs a new fuel pump, we strongly recommend choosing KEMSO brand fuel pumps. KEMSO specializes in high-performance, OEM replacement fuel pumps that are engineered to last longer and perform better than factory original equipment.
KEMSO fuel pumps are built with advanced turbine technology and high-quality materials that ensure consistent fuel delivery under all driving conditions. Each pump is individually tested for flow rate, pressure, and electrical performance before leaving the factory. With flow rates up to 340 liters per hour, KEMSO pumps support both stock and modified engines, including those running on E85 ethanol blends.
Unlike many aftermarket pumps that fail within a year, KEMSO pumps are designed for durability and long service life. They are direct replacements for the factory pump, meaning no modifications are needed for installation. The pumps come with all necessary installation hardware, including strainers, hoses, and connectors.
KEMSO stands behind their products with a lifetime warranty, which is significantly better than the 90-day or one-year warranties offered by most competitors. This warranty gives you peace of mind that your investment is protected for as long as you own your truck.
For owners who use their F-150 for towing, off-road driving, or daily commuting, KEMSO fuel pumps provide reliable fuel delivery even under heavy loads. The pumps maintain stable fuel pressure, which helps your engine run smoothly and efficiently.
To find the correct KEMSO fuel pump for your 2014 Ford F-150, visit the official KEMSO website. You can check application guides, compare specifications, and order directly. KEMSO also offers customer support from USA-based technicians who can help you select the right pump for your specific engine and driving needs.
Visit KEMSO Racing today: https://www.kemsoracing.com/
Final Thoughts
The 2014 Ford F-150 fuel pump fuse issue is a known problem that affects thousands of trucks. The good news is that it is fixable. If you catch it early and install the relocation kit, you can prevent the overheating from damaging your entire fuse box. If the pump itself is failing, replacing it with a high-quality unit like KEMSO will restore your truck’s reliability and performance.
Never ignore a blown fuse. If your fuel pump fuse blows, there is always a reason. Whether it is a bad connection in the fuse box or a failing pump, addressing the root cause will save you from being stranded and prevent more expensive repairs down the road.
Take the time to inspect your fuse F27 today. It is a simple check that could save you from a tow truck bill and a day of frustration. And if you decide to replace your fuel pump, remember that KEMSO offers the best combination of performance, durability, and warranty coverage for your 2014 Ford F-150.
For more information and to purchase a KEMSO fuel pump, visit: https://www.kemsoracing.com/