Obdaryn

P26EAFuel Pump Control Module B

  • Generic OBD-II code · Powertrain
  • Turns on the check-engine light
  • Matters for the ITP
How the car detects it
Vehicles with a second fuel pump give it its own driver module, and P26EA means that module B has reported an internal fault of its own. Ford documents the code in its gasoline OBD summary for 2020 to 2023 and again in 2024 as an internal error reported by the driver module of pump B. Module B reports its state to the PCM as a duty cycle on a fuel pump monitor wire: about 20 % flags invalid control data, 30 % plus or minus 4 % flags the internal error, while 0 or 100 % means no feedback at all (U016C). The check runs continuously at 11 to 16 V battery voltage and needs 2 to 5 seconds. Roush CleanTech's propane systems for Ford E- and F-Series route the same signal through a relay module to the PCM; there the code is non-MIL on the E-450 but MIL on F-650 and F-53. Fuel delivery from pump B may be reduced.
What you may notice
  • Warning light on, depending on the vehicle calibration
  • Hesitation or power loss at high load
  • Hard starting or stalling if the second pump is needed
Likely causes
  • LikelyInternal failure of fuel pump driver module B
  • PossibleOpen or corroded fuel pump monitor wire between module B and the PCM or relay module
  • RarePoor power or ground at module B
  • RareWorn or seized fuel pump B overloading the module
Inspection (ITP)
Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
Repair
Medium · Usually a job for a workshop.Typical cost: €120 – €900

Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.