Diagnostic article Generic OBD-II
P26EA: Pump B internal-error feedback is not lost communication
Understand the 30-percent feedback classification behind Ford P26EA and how it differs from missing fuel-pump module feedback.
Read before applying this article
Documented application
Ford 2024–2025 gasoline OBD summary, July 16, 2024 revision; only the described monitor and architecture. Model, engine and calibration fitment are not inferred.
The code alone does not identify a failed part or establish that a vehicle is safe to drive. Confirm the vehicle, reporting module and applicable service procedure.
P26EA is Ford’s fuel-pump B driver-module internal-error classification in the cited mechanical returnless fuel-system monitor. The source maps it to P2632_01 and identifies a fuel-pump monitor feedback duty cycle of 30% ±4%. That is a diagnostic feedback code, not a commanded pump speed or a measured fuel-pressure percentage.
Feedback can be present while reporting a problem
Ford distinguishes this internal-error band from invalid control-data feedback and from loss of communication. U016C corresponds to no meaningful feedback, described as a 0% or 100% duty cycle. Receiving the P26EA feedback band therefore differs from receiving no usable monitor waveform.
The check runs continuously within its entry conditions, with battery voltage between 11 and 16 V and a monitoring duration of two to five seconds. These conditions belong to the documented implementation, not every fuel-pump module.
Interpret the signal before condemning hardware
A useful record preserves the feedback duty cycle, pump B identity, supply state and complete fault subtype. A rail-pressure complaint does not itself establish the internal-error feedback classification, and an apparently normal pressure later does not explain the module’s earlier report.
The summary does not disclose which internal component failed or provide a universal replacement decision. Vehicle-specific checks must distinguish reported module status from wiring and feedback acquisition. The 30% figure must not be applied as a universal operating command or pump-output specification.
Source and applicability
Ford 2024–2025 gasoline OBD summary, July 16, 2024 revision; only the described monitor and architecture. Model, engine and calibration fitment are not inferred. The monitor explanation does not identify a failed part or replace the applicable service procedure. Ford PDF, page 141.
Article source documents
Source checks describe how the text was prepared; they do not certify a diagnosis or confirm compatibility with every vehicle using this code.
Original code reference
Dictionary definition
Fuel Pump Control Module B
This definition retains its original catalog scope. The article above is limited to its explicitly documented application.
Reference scope
Generic OBD-II definition.
A manufacturer label does not establish the model, year, engine or module to which a diagnosis applies. Read the safety and diagnostic limits.
Definition source
- DTC Database: pinned community code definitions
Source checked · MIT