Powertrain, generic

P0ED4 Generator Phase X Current

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P0ED4 is the general current fault for phase X of the hybrid generator. J2012 names the generator phases U, V and W and adds a separate X, Y, Z series, which presumably serves machines with a second three-phase winding set fed by its own inverter bridge; which vehicles use it is not published, and no manufacturer documents P0ED4. Low and high cases are P0ED5 and P0ED6. Ford explains the role of its U-V-W codes on its 2019 power-split hybrids: the inverter is checked for overcurrent, current sensor and current regulation faults, and generator problems of this kind are stored as P0A6F, P0A72, P0A75 or their high variants. CARB requires electric drive components to be monitored. A faulty phase current limits generator output, engine start and charging.

Likely causes

Fault in the inverter bridge or current regulation for phase X
Phase X current sensor out of tolerance
Loose or damaged high-voltage connection of phase X

Symptoms

  • Hybrid system warning and MIL
  • Reduced charging, engine may start less smoothly

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€150–4,500
Time1–6 h

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

Parts involved

generator phase xinverter

Related codes

P0ED5P0ED6P0ED7P0EDAP0A6FP0DFA

References: fordservicecontent.com, law.cornell.edu.