Powertrain, generic (extended)

P26EA Fuel Pump Control Module B

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

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.

Likely causes

Internal failure of fuel pump driver module B
Open or corroded fuel pump monitor wire between module B and the PCM or relay module
Poor power or ground at module B
Worn or seized fuel pump B overloading the module

Symptoms

  • 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

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€120–900
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

fuel pump module bcommunication bus

Related codes

P2632P027BP025AP064AU016C

References: fordservicecontent.com, fordservicecontent.com, roushcleantech.com.