Powertrain, generic

P0ED2 Hybrid/EV Battery F Voltage Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P0ED2 means hybrid/EV battery F delivers less voltage than the controller predicts from current draw and state of charge. No manufacturer documents P0ED2 publicly. Published undervoltage limits exist for whole packs: GM's hybrid tables fail the pack below 24 V (P0ABC), and Ford sets P0A7D during cranking if its pack reads under 184.8 V on plug-in or 167.2 V on full hybrids, or if the weakest cell drops below 2.1 V for half a second. For one unit the limits scale with its number of cells. Typical causes are an aged module with lost capacity, a cell with internal leakage that drained during standstill, or a high-resistance joint that loses voltage under load. Discharge power is cut back. High voltage of unit F is P0ED3, low voltage of unit E is P0ECE.

Likely causes

Aged module in unit F with lost capacity
Cell with internal leakage drained during standstill
High-resistance connection inside unit F dropping voltage under load

Symptoms

  • Less power in electric mode
  • Shorter electric range
  • MIL and battery warning

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–4,000
Time1–10 h

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

Parts involved

hv battery fbms

Related codes

P0ED0P0ED1P0ED3P0ECEP0ABCP0A7D

References: gsi.ext.gm.com, fordservicecontent.com, law.cornell.edu.