Ford Super Duty Fuel Pump Recall: A Complete Owner's Guide to the CP4 High-Pressure Fuel Pump Issue

Ford Motor Company has issued a critical safety recall for certain Ford Super Duty trucks equipped with 6.7L Power Stroke diesel engines, specifically targeting a known failure point in the high-pressure fuel pump. This recall, primarily affecting model years 2020 through early 2023, addresses the CP4 fuel pump, a component whose catastrophic failure can lead to sudden engine stall, loss of motive power, and severe, costly damage to the entire fuel system. If you own a potentially affected Ford F-250, F-350, or F-450 Super Duty, immediate action is required to check your vehicle's status and understand your options, which include a newly designed replacement pump and extended warranty coverage from Ford.

This guide provides a comprehensive, factual breakdown of the recall, explaining the root cause, the risks involved, the steps Ford is taking to resolve it, and the precise actions you must take as an owner to ensure your vehicle's safety and reliability.

Understanding the Core Problem: The CP4 High-Pressure Fuel Pump

At the heart of this recall is a component known as the CP4.2 high-pressure fuel pump. Its job in the 6.7L Power Stroke diesel engine is to take fuel from the tank and pressurize it to extremely high levels—over 30,000 psi—before injecting it into the engine's cylinders for combustion. This high pressure is essential for modern diesel engines to meet performance and emissions standards.

The fundamental issue with the specific CP4 pumps used in these trucks is their susceptibility to internal failure. The pump's internal components, particularly its plungers and camshaft, can wear prematurely or seize. This failure is often attributed to a lack of lubricity in the diesel fuel, a problem more pronounced in North American ultra-low-sulfur diesel (ULSD) compared to European diesel specifications for which the pump was originally designed. When the pump fails, it does not simply stop working. It can send metallic debris throughout the entire high-pressure fuel system.

The Domino Effect of a Pump Failure

A failing CP4 pump does not operate in isolation. Its failure creates a cascade of damage that is both a safety hazard and financially burdensome. This domino effect is why the recall is so severe.

1. Primary Safety Risk: Sudden Engine Stall. The immediate consequence of a pump failure is a loss of high-pressure fuel delivery. This causes the engine to stall without warning. If this occurs at highway speeds, while towing, or in traffic, it significantly increases the risk of a crash. The driver loses engine power, power steering, and power braking assist, requiring much greater effort to control and stop the vehicle safely.

2. Widespread System Contamination and Damage. As the pump's internal metal parts grind and disintegrate, shavings and debris are pumped under high pressure into the fuel lines, the fuel rail, and the fuel injectors. This metallic contamination is abrasive and destructive. It can clog and ruin all eight expensive fuel injectors and damage other critical components.

3. Extremely Costly Repairs. Replacing just the failed fuel pump is only a small part of the repair. A complete fix after a CP4 failure typically requires:

• A new high-pressure fuel pump.
• All eight new fuel injectors.
• The high-pressure fuel rails.
• All high-pressure fuel lines.
• The fuel filter housing and filters.
• Extensive labor to flush the entire low-pressure system and replace all components.

Out of warranty, this repair can easily exceed $10,000 USD. Even with partial warranty coverage, owners have often faced bills in the thousands of dollars prior to this recall announcement.

Official Recall Details: Affected Models and Scope

Ford's recall is official and registered with the National Highway Traffic Safety Administration (NHTSA). The affected vehicles are:

• Model: Ford F-250, F-350, and F-450 Super Duty pickup trucks.
• Engine: 6.7L Power Stroke V8 diesel engine.
• Model Years: Primarily 2020, 2021, 2022, and early 2023 model years. The specific build date range is crucial, as not all trucks within these model years are affected. The recall targets vehicles built from a certain start date up to a point in early 2023 when Ford began installing a different, more robust pump.

The exact population is in the hundreds of thousands of vehicles. The only way to know for certain if your specific truck is included is to check its 17-character Vehicle Identification Number (VIN) through official channels.

Ford's Recall Remedy: The New CP4.2 Pump and Warranty Coverage

Ford's solution for recalled vehicles is not a simple like-for-like replacement. The company has developed and is installing a newly designed CP4.2 high-pressure fuel pump that incorporates engineering changes to address the internal durability issues. This updated pump is intended to be more tolerant of the lubricity characteristics of North American diesel fuel.

More importantly, Ford is backing this repair with a substantial Extended Warranty Coverage for the high-pressure fuel system. This coverage provides peace of mind to owners after the repair is performed. The key terms of this coverage are:

• Covered Components: The extended warranty specifically covers the high-pressure fuel pump, fuel injectors, fuel rails, and high-pressure fuel lines.
• Coverage Duration: This protection lasts for 10 years or 200,000 miles from the vehicle's original in-service date, whichever comes first.
• Transferability: This extended coverage is fully transferable to subsequent owners, which helps protect the vehicle's resale value.
• No Cost to Owner: The recall repair—replacement of the pump with the new design—is performed at no charge to the vehicle owner. The extended warranty is also provided at no additional cost.

This warranty extension is a critical part of the remedy, as it protects owners from the catastrophic financial risk of a future fuel system failure for a very long period.

Step-by-Step: What Super Duty Owners Must Do Right Now

If you own a 2020-2023 Super Duty with the 6.7L diesel, follow these steps in order.

Step 1: Check Your VIN for an Open Recall.
This is the first and most important action. Do not assume your truck is or isn't affected. You can check in two ways:

• Ford Official Website: Go to the Ford Recall Information page and enter your full 17-digit VIN. Your VIN is located on your driver's side dashboard (visible through the windshield), on your driver's side door jamb sticker, or on your vehicle registration and insurance documents.
• NHTSA Website: Visit the NHTSA Recalls page and enter your VIN. This government database will show all open recalls on your vehicle.

Step 2: Schedule a Service Appointment with Your Ford Dealer.
If your VIN check confirms an open recall for the fuel pump (recall number may be listed as 23S27 or similar), contact an authorized Ford dealership immediately to schedule the repair. Describe it as the "CP4 high-pressure fuel pump recall." While the recall is urgent, due to the large number of vehicles, you may be placed on a waitlist until the dealer has the updated pump parts and capacity to perform the work. Get on the list as soon as possible.

Step 3: Understand the Repair Process and Ask Questions.
When you take your truck in, the service department will replace the existing CP4.2 pump with the newly designed version. The repair typically takes one to two full days. Before leaving your vehicle, confirm with the service advisor that the repair will include the full 10-year/200,000-mile extended warranty on the related fuel system components. Request documentation of the repair completion and the warranty extension for your records.

Step 4: Maintain Your Vehicle and Keep Records.
After the repair, continue to follow Ford's recommended maintenance schedule. For diesel owners, this is especially important regarding fuel filter changes. Use high-quality diesel fuel from reputable stations. Keep all service records, including the recall repair paperwork, in a safe place. This proves the work was done and details your extended warranty coverage.

Frequently Asked Questions from Super Duty Owners

Q: Can I continue to drive my truck if it has the recall?
A: Ford's official recall notice will state the level of risk. Given that the failure can lead to sudden stall and loss of power, it is a serious safety defect. You should contact your dealer promptly upon confirmation of the recall. If you experience any symptoms like unusual noise from the fuel pump area, loss of power, or rough running, you should stop driving the vehicle immediately and have it towed to a dealer.

Q: What are the symptoms of a failing CP4 pump?
A: Early signs can be subtle but may include a louder-than-normal metallic "ticking" or "chattering" noise from the engine bay (particularly from the fuel pump area), a slight loss of engine power or hesitation, or a check engine light. However, in many cases, the failure is sudden with little to no warning.

Q: Does using diesel fuel additives help prevent this problem?
A: Prior to the recall repair, many owners used diesel fuel additives designed to increase lubricity. While this was a common recommendation from the diesel community and may have offered some risk reduction, it was not a guaranteed solution to the inherent design weakness of the original CP4 pump. The only definitive fix is the installation of Ford's newly designed pump under the recall. After the repair, following Ford's maintenance guidelines is key.

Q: My truck had a CP4 failure before the recall was announced. Will Ford reimburse me?
A: Ford has established a reimbursement program for owners who paid for repairs related to this specific failure out of pocket prior to the recall announcement. You must contact Ford Customer Service directly and be prepared to provide detailed repair invoices and proof of payment. There are specific eligibility windows and requirements, so you will need to inquire with Ford directly.

Q: How does this affect the resale value of my Super Duty?
A: A vehicle with an open, unrepaired recall can negatively impact its value and make it difficult to sell, as potential buyers and dealerships will be aware of the major repair liability. Conversely, a vehicle that has had the recall repair completed and has the 10-year/200,000-mile extended warranty in place is in a much stronger position. The warranty adds significant value and peace of mind for the next owner. Always provide the recall repair documentation during a sale.

The Bigger Picture: Reliability and Proactive Ownership

The CP4 fuel pump issue has been a significant concern for the diesel truck community for years. This official recall represents Ford's formal acknowledgment of the problem and its commitment to a engineered solution for its customers. For Super Duty owners, whose trucks are often essential tools for work, towing, and heavy-duty use, reliability is non-negotiable.

This situation underscores the importance of proactive vehicle ownership. Regularly checking for open recalls—not just for Ford, but for any vehicle—is a critical safety habit. Recalls are issued to correct defects that pose a risk to safety or compliance. Ignoring a recall notice, especially one of this magnitude, is a risk to your safety, your finances, and the safety of others on the road.

If your Ford Super Duty is within the affected model years, your path forward is clear. Verify your recall status using your VIN today. If a recall is open, schedule the repair without delay. The installation of the updated fuel pump, coupled with the extensive warranty coverage, is designed to restore the long-term durability and reliability that Super Duty owners depend on. This recall remedy aims to finally resolve a persistent issue and allow owners to use their powerful trucks with confidence for years and hundreds of thousands of miles to come.