On Sept. 30, 2026, a federal judge certified classes of consumers in five states in a lawsuit against Ford Motor Company accusing the automaker of knowingly selling diesel trucks equipped with defective Bosch CP4 fuel pumps.
In Judge Laurie J. Michelson’s 60-page order, consumers’ claims were upheld under various state laws, and five classes were certified for the states of California, Louisiana, Ohio, Pennsylvania and South Carolina. The order also appointed class counsel, acknowledging the qualifications of Hagens Berman Sobol Shapiro LLP and co-counsel firms, Hilliard Law and The Miller Law Firm P.C.
The court also largely denied Ford’s motion for summary judgment, establishing trial as the next step in the case.
Own a Ford vehicle with a Bosch CP4 fuel pump? Have you replaced your vehicle's fuel pump or engine, and paid out of pocket for a repair? A defect may cause metal shavings to leak into your vehicle, leading to catastrophic failure and costly repair bills. Contact us »
AFFECTED VEHICLES
- Models with 6.7L Power Stroke Diesel Engines, 2011-Present
According to the class-action lawsuit, a defect in Ford diesel CP4 fuel pumps essentially leaves vehicle owners driving “ticking time bombs,” with the potential for owners to suffer sudden and unexpected shutoff of the vehicle’s engine while it is in motion.
On September 30, 2026, the Court certified five classes under the implied warranty laws of California, Ohio, Louisiana, Pennsylvania, and South Carolina. It also largely denied motion for summary judgment, clearing the way for trial.
Millions of Ford trucks are installed with the defective fuel pump that can suddenly fail without warning, causing a total fuel system failure and consequential engine failure resulting in an expensive repair bill. Plaintiffs say the defendants are also refusing to fix the trucks under warranty.
FUEL PUMP DEFECT EXPLAINED
The basis of this defect is the Bosch-supplied CP4 high pressure fuel pump.
Unbeknownst to truck owners, Bosch’s CP4 pump was never compatible with American fuel standards and not built to withstand foreseeable levels of fuel contamination.
As a result, the pump is forced to run dry and destroy itself as air bubbles allow metal to rub against metal. The pump secretly deposits metal shavings and debris throughout the fuel system and the engine.
YOUR CONSUMER RIGHTS
Hagens Berman believes that consumers have the right to replacement costs of vehicle parts and deserve answers. We think that consumers shouldn't have to suffer from undue wear and tear to the engine and fuel pump, at worst leading vehicle owners into a dangerous emergency situation.
TOP AUTO LITIGATION FIRM
Hagens Berman is one of the most successful auto litigation law firms in the U.S. and has secured more than $21 billion in settlement benefits for vehicle owners impacted by defects and other automotive issues. Your claim will be handled by attorneys experienced in automotive consumer law.
NO COST TO YOU
In no case will any class member be asked to pay any out-of-pocket sum. In the event Hagens Berman or any other firm obtains a settlement that provides benefits to class members, the court will decide a reasonable fee to be awarded to the class's legal team.
CASE TIMELINE
On Sept. 30, 2026, a federal judge certified classes of consumers in five states in a lawsuit against Ford Motor Company accusing the automaker of knowingly selling diesel trucks equipped with defective Bosch CP4 fuel pumps.
In Judge Laurie J. Michelson’s 60-page order, consumers’ claims were upheld under various state laws, and five classes were certified for the states of California, Louisiana, Ohio, Pennsylvania and South Carolina. The order also appointed class counsel, acknowledging the qualifications of Hagens Berman Sobol Shapiro LLP and co-counsel firms, Hilliard Law and The Miller Law Firm P.C.
The court also largely denied Ford’s motion for summary judgment, establishing trial as the next step in the case.
In a 65-page order, Hon. Bernard A. Friedman allowed the majority of claims against Ford to continue, commenting that in light of Ford’s pushback regarding the CP4 defect, “…the Court agrees with Plaintiffs that Ford does not address all the relevant allegations. …As Plaintiffs point out, Ford does not address a section of the SAC on fuel pump design... Accepting Plaintiffs’ allegations as true, the SAC plausibly alleges a defect. The documents appended to Ford’s response do not alter this conclusion.” The court upheld all claims against Ford related to economic loss, unjust enrichment and key state consumer protection laws.
Judge Friedman also denied Ford’s motion to dismiss the case regarding merchantability. “Plaintiffs respond that dismissal is not appropriate because they plausibly allege that their class vehicles are unfit for providing safe and reliable transportation. The Court agrees with Plaintiffs,” the order reads, adding “...a standard road vehicle must be able to provide safe and reliable transportation and be substantially free of defects.”
In an order issued Nov. 2, 2020, U.S. District Judge Nelva Gonzales Ramos upheld claims of fraudulent concealment, violations of the Texas Deceptive Practices Act, implied warranty breach and a portion of unjust enrichment claims against Ford in a victory for truck owners bringing the lawsuit.
The opinion details the court’s findings and reasoning: “…Plaintiffs reference multiple instances of Ford personnel knowingly testing the CP4 pump with only specification-compliant fuel and acknowledging the lubricity scar/CP4 pump problem, along with the reality of prevalent non-compliant fuel in the market.” Judge Ramos also stated, “Ford’s failure to disclose the functional problems associated with the CP4 pump and the high price for repair caused them to overpay for their vehicles.”
