A federal judge has certified a class action against Ford over a diesel fuel pump defect, clearing the way for owners in five states to pursue claims as a group instead of filing separate lawsuits. U.S. District Judge Laurie J. Michelson of the Eastern District of Michigan certified five state-level classes on September 30, 2026, in *Droesser v.
Ford Motor Company* (No. 2:19-cv-12365), according to CarPro's legal roundup. The case centers on the Bosch CP4 high-pressure fuel pump used in Ford's diesel trucks. Certification means a judge has found enough owners share the same core claims to proceed together, but it is a procedural step, not a payout — no settlement or claim process exists yet.
Official resources:
- Read the official notice from Carpro — Use this primary source to verify the official announcement.
- Read the official notice from Leagle — Use this primary source to verify the official announcement.
Table of Contents
- Which Owners Are Covered
- What the Lawsuit Alleges
- Is This a Settlement?
- What Eligible Owners Can Do Now
- Frequently Asked Questions
Which Owners Are Covered
The certified classes cover owners in California, Louisiana, Ohio, Pennsylvania, and South Carolina who paid out of pocket to repair a failed CP4 pump and never signed a dealership arbitration agreement, according to All About Lawyer. The vehicles at issue are Ford Super Duty trucks with the 6.7L Power Stroke diesel engine, model year 2011 and newer, per Hagens Berman's case page. Two groups are excluded from the certified classes: owners who signed a dealership arbitration agreement when they bought or serviced their truck, and owners Ford already reimbursed for a CP4 pump repair, All About Lawyer reports.
If either applies, this litigation does not currently cover that repair. Judge Michelson also declined to certify proposed classes in Indiana and New Jersey, so the case moves forward as a class action only in the five states listed above, according to CarPro. An owner in a state not on that list is not part of this case, regardless of whether they had the same repair.
What the Lawsuit Alleges
Plaintiffs allege the CP4 pump is inadequately lubricated by U.S. diesel fuel, which causes internal components to wear down and spread metal debris through the fuel system, eventually leading to sudden pump or engine failure, per CarPro. That failure mode is the basis for the out-of-pocket repair costs the certified classes are seeking to recover. Ford disputes that the CP4 pump has the defect plaintiffs describe.
In court filings, the company has argued that some owners caused their own damage by failing to replace fuel filters on schedule or by using excessive diesel exhaust fluid (DEF), gasoline, or gasoline additives in the fuel system, according to Pickup Truck Talk. That dispute over causation remains unresolved and will factor into how the case proceeds toward trial. On the same day it certified the classes, the court also ruled on Ford's motion for summary judgment, granting it in part and denying it in part, according to the court's own opinion on Leagle. That split ruling dismissed some claims outright while leaving others intact, narrowing the case without resolving it.
Is This a Settlement?
No. There is no settlement, payment amount, claim form, or claim deadline at this stage, per All About Lawyer. Certification only establishes that the case can proceed as a group action for the five state classes; it does not mean Ford has agreed to pay anything or that a court has ruled against Ford on the merits.
The court ordered the parties to propose a process for notifying class members within 30 days of the September 30, 2026 certification order, according to All About Lawyer. That notice process — how eligible owners will be identified and informed — is the next concrete step, and it typically precedes any settlement negotiation or trial date. Readers searching for a payout amount or a filing deadline right now will not find one, because neither exists yet. Any claim form or compensation figure would come later, either from a settlement reached before trial or a verdict after one.
What Eligible Owners Can Do Now
Owners who believe they match the certified classes have a few concrete things to check and track while the case moves forward: Because no claim form exists yet, there is nothing to file today. The practical step is documentation: the records above are what would support a claim once the court approves a notice process and, eventually, any resolution. Owners who are unsure whether their repair qualifies, particularly around the arbitration-agreement exclusion, may want to have an attorney review their purchase and service paperwork before the notice process begins.
- Confirm your truck is a Ford Super Duty with the 6.7L Power Stroke diesel engine, model year 2011 or newer.
- Confirm you live in California, Louisiana, Ohio, Pennsylvania, or South Carolina.
- Confirm you paid out of pocket for a CP4 fuel pump repair and were not reimbursed by Ford.
- Check whether you signed a dealership arbitration agreement, which would exclude the repair from this case.
- Keep repair invoices, receipts, and any correspondence with Ford or a dealership about the pump failure.
Frequently Asked Questions
Does class certification mean Ford lost the case?
No. Certification lets the five state classes proceed together, but the court's summary judgment ruling the same day dismissed some claims while leaving others active, per the Leagle opinion. No verdict or settlement has been reached.
What if I already got reimbursed by Ford for a CP4 pump repair?
You are excluded from the certified classes. The case covers only owners who paid out of pocket and were not reimbursed, according to All About Lawyer.
Can owners in states other than the five certified ones join later?
The judge declined to certify proposed classes in Indiana and New Jersey, so the case currently proceeds only in California, Louisiana, Ohio, Pennsylvania, and South Carolina, per CarPro.