Ford Diesel CP4 Fuel Pump Class Action, Five Classes Certified After September 2026 Ruling

A federal judge has certified five consumer classes in a long-running lawsuit accusing Ford Motor Company of selling diesel trucks equipped with allegedly defective Bosch CP4 high-pressure fuel pumps.

On September 30, 2026, U.S. District Judge Laurie J. Michelson granted in part and denied in part the plaintiffs’ motion for class certification in Droesser et al. v. Ford Motor Company, No. 2:19-cv-12365 (E.D. Mich.). The certified classes cover qualifying purchasers in California, Louisiana, Ohio, Pennsylvania and South Carolina who paid out of pocket for a CP4 pump repair. Proposed Indiana and New Jersey classes were not certified.

The same day, the court granted in part and denied in part Ford’s motion for summary judgment, leaving important claims alive.

There is currently no settlement, payment amount, claim form, or claim deadline. The court ordered the parties to propose a class-notice process within 30 days of the September 30 order.

Quick Facts: Droesser v. Ford Motor Company CP4 Diesel Fuel Pump Class Action

Detail	Information
Case	Mark William Droesser et al. v. Ford Motor Company
Case number	2:19-cv-12365
Court	U.S. District Court for the Eastern District of Michigan, Southern Division
Judge	Laurie J. Michelson
Defendant	Ford Motor Company
Defect alleged	Defective Bosch CP4 high-pressure diesel fuel pump
Class vehicles	Model Year 2011-present Ford Power Stroke 6.7L diesel trucks
Class certification	Five state classes certified (September 30, 2026)
Certified states	California, Louisiana, Ohio, Pennsylvania, South Carolina
Who generally qualifies	Qualifying purchasers in a certified state who paid out of pocket for a CP4 repair
Exclusions	Purchasers who signed a dealership arbitration agreement; people already reimbursed by Ford for the repair
Not certified	Indiana and New Jersey
Settlement	None announced
Claim form / deadline	None

What the Ford CP4 Fuel Pump Lawsuit Alleges

The lawsuit concerns the CP4 high-pressure fuel pump used in certain Ford trucks with 6.7L Power Stroke diesel engines. Plaintiffs allege the pump’s design is not robust enough for foreseeable real-world fuel conditions.

The pump relies on diesel fuel to lubricate and cool its internal parts. Plaintiffs’ theory is that inadequate lubrication or contaminants can cause internal wear and metal shavings, which can spread through the fuel system and cause pump or engine failure. They allege this can lead to major repair bills; the court’s order discusses evidence of repairs costing approximately $9,000 in some circumstances. Because a repair often involves installing another CP4 pump, plaintiffs also allege owners remain exposed to the same risk.

Ford disputes the defect theory. It has argued that the pump was adequately designed and tested and that failures can result from factors such as contaminated fuel or customer misuse. These are allegations and competing positions, not a final finding that every CP4 pump is defective or that Ford is liable.

Which Ford Trucks Are Included?

The court designated Model Year 2011-present Ford Power Stroke 6.7L diesel trucks as the class vehicles. Owning one of these trucks does not automatically make you a class member. The certified classes also require a qualifying purchase in one of the five states, an out-of-pocket CP4 repair, no dealership arbitration agreement, and no prior reimbursement from Ford for that repair.

The Five Certified Ford CP4 Classes

California. People or entities that purchased a qualifying truck in California for personal, family, or household purposes, did not sign a dealership arbitration agreement, and paid out of pocket for a CP4 repair.

Louisiana. People or entities that purchased a qualifying truck in Louisiana, did not sign a dealership arbitration agreement, and paid out of pocket for a CP4 repair. The court found a factual dispute over Ford’s knowledge of the alleged defect that prevented summary judgment on the Louisiana claim.

Ohio. Qualifying Ohio purchasers who did not sign a dealership arbitration agreement and paid out of pocket for a CP4 repair.

Pennsylvania. Qualifying Pennsylvania purchasers who did not sign a dealership arbitration agreement and paid out of pocket for a CP4 repair.

South Carolina. Qualifying South Carolina purchasers who did not sign a dealership arbitration agreement and paid out of pocket for a CP4 repair.

The court found that common questions, such as whether the CP4 pump is defective and whether Ford had a duty to disclose, can be answered on a class-wide basis. Final class definitions remain subject to the court’s orders.

Why the Court Limited the Classes to Owners With Pump Failures

Ford argued that owners whose pumps had not failed suffered no concrete injury merely because their trucks contained an allegedly defective part. The court agreed that a future risk of failure, standing alone, was not enough for the damages classes. It narrowed the classes to people who actually experienced a failure and paid out of pocket for the repair.

For consumers, this is a major distinction: simply owning a qualifying Ford diesel truck is not enough to belong to a certified class.

Why Indiana and New Jersey Were Not Certified

Plaintiffs originally sought seven state classes: California, Indiana, Louisiana, New Jersey, Ohio, Pennsylvania, and South Carolina.

• Indiana: the named plaintiff’s claim was found untimely, so she could not represent an Indiana class.
• New Jersey: the named plaintiff was found inadequate as a representative because he did not personally purchase the vehicle or pay the repair costs, and no other named plaintiff could represent the proposed class.

The ruling should therefore not be described as a nationwide class certification.

The Summary-Judgment Ruling

In a companion September 30 order, the court granted Ford’s summary-judgment motion in part and denied it in part. The court found plaintiffs had admissible expert evidence supporting their defect theory, and in July 2026 it had denied Ford’s attempt to exclude plaintiffs’ defect expert, Dr. Bradley Edgar. It also found factual disputes on causation and, in Louisiana, on Ford’s alleged knowledge of the defect, so certain claims can proceed toward trial.

Several individual claims were dismissed, including those of named plaintiffs Reeves, Sawicki, Bauers, Fowlkes, Doa, and Eriv. The case as a whole continues.

What Class Certification Means for Ford Owners

Certification means qualifying people in five states can be represented as a group, subject to the final class definitions, notice, and later orders. It does not mean Ford has been found liable, and it does not establish how much, if anything, any class member will receive.

Is There a Settlement or Claim Form?

No. The September 30 order is a certification ruling, not a settlement approval. There is no settlement fund, payment amount, claim form, or claim deadline. The court instead ordered the parties to propose a notice procedure within 30 days. Be cautious of any website that asks for personal information or promises a guaranteed payment from this lawsuit.

What Ford Diesel Owners Should Do Now

1. Keep vehicle records: purchase documents, VIN, registration, repair orders, invoices, and dealership communications.
2. Keep proof of payment for any CP4 repair, since the certified classes require an out-of-pocket repair.
3. Document any Ford reimbursement. People already reimbursed by Ford for the repair are excluded, so keep those records.
4. Watch for official class notice rather than submitting information to unverified sites.
5. Check your VIN for recalls separately using NHTSA’s recall lookup. A recall does not mean you qualify for this lawsuit.

How This Differs From the Ford F-150 10R80 Transmission Lawsuit

AllAboutLawyer has separately covered the Ford F-150 10R80 transmission class action. That case concerns the 10-speed transmission in certain 2017-2020 F-150 trucks. This case concerns the Bosch CP4 fuel pump in 6.7L Power Stroke diesel trucks and is pending in the Eastern District of Michigan. Rulings and eligibility rules in one do not apply to the other.

For general information on how class-action claims proceed, see How To Claim A Lawsuit Settlement?.

What Happens Next

The immediate step is the class-notice process, with a proposal due within 30 days of September 30, 2026. After that, the case can move toward the remaining merits proceedings, including further discovery, additional motions, or trial if the claims are not resolved. Settlement discussions can occur at any time. A claims process would open only after a court-approved settlement or a judgment.

Key Dates

Date	Development
August 9, 2019	Plaintiffs file the original putative class action
April 28, 2023	Third Amended and Consolidated Class Action Complaint filed
July 28, 2026	Court denies Ford’s motion to exclude plaintiffs’ defect expert
September 28, 2026	Limited class-certification hearing
September 30, 2026	Court certifies five state classes; denies Indiana and New Jersey; partially grants and denies Ford’s summary-judgment motion
Within 30 days after September 30, 2026	Parties must propose a class-notice procedure
Current	Active litigation; no settlement or claim deadline

Frequently Asked Questions

Is the Ford CP4 fuel pump lawsuit now a certified class action?

 Yes, but only for five state-specific classes: California, Louisiana, Ohio, Pennsylvania, and South Carolina. Indiana and New Jersey were not certified.

What is the case number?

 2:19-cv-12365, Droesser et al. v. Ford Motor Company, U.S. District Court for the Eastern District of Michigan.

Which Ford trucks are class vehicles?

 Model Year 2011-present Ford Power Stroke 6.7L diesel trucks.

Do I qualify just because I own one of these trucks?

 No. You generally must have purchased in a certified state, paid out of pocket for a CP4 repair, not signed a dealership arbitration agreement, and not been reimbursed by Ford for that repair.

Has Ford agreed to a settlement? 

No settlement has been announced. Certification does not mean Ford has agreed to pay anyone.

Has the court ruled the CP4 pump is defective? 

No. The court allowed plaintiffs’ expert evidence and found factual disputes that prevent summary judgment on certain claims, but that is not a final finding of defect or liability.

Is there a claim form or deadline?

 No. The court has ordered a notice process, but no claim form or deadline exists.

What should I do if I paid for a CP4 repair?

 Keep your invoice, proof of payment, vehicle records, and any communications with Ford or a dealership, and watch for official class notice.

Bottom Line

The September 30, 2026 ruling is a major procedural step: five classes certified, limited to owners who paid out of pocket for a CP4 pump failure, two proposed state classes rejected, and Ford’s summary-judgment motion partly denied. It does not award compensation or establish a settlement. For now, preserve your purchase and repair records and watch for official class notice. There is currently no claim form, no settlement payment, and no claim deadline.

Sources

• Droesser et al. v. Ford Motor Company, No. 2:19-cv-12365 (E.D. Mich. Sept. 30, 2026), Opinion and Order on class certification: https://law.justia.com/cases/federal/district-courts/michigan/miedce/2%3A2019cv12365/340794/201/
• Droesser et al. v. Ford Motor Company, No. 2:19-cv-12365 (E.D. Mich. Sept. 30, 2026), Opinion and Order on Ford’s motion for summary judgment: https://law.justia.com/cases/federal/district-courts/michigan/miedce/2%3A2019cv12365/340794/202/
• Droesser et al. v. Ford Motor Company, No. 2:19-cv-12365 (E.D. Mich. July 28, 2026), Opinion and Order on motion to exclude expert Dr. Bradley Edgar: https://law.justia.com/cases/federal/district-courts/michigan/miedce/2%3A2019cv12365/340794/195/
• NHTSA vehicle recall lookup: https://www.nhtsa.gov/recalls

Researched and written by Israr Ahmad, Legal Content Researcher.

This article is for informational purposes only and is not legal advice. AllAboutLawyer.com is a consumer legal information site, not a law firm, and does not provide legal representation. Court orders are the authoritative source. Owners with questions about potential claims should consult a licensed attorney.