P0ED2 code meaning
Hybrid/EV Battery F Voltage Low
Powertrain system Generic code P0Exx codes Check engine light
What P0ED2 means
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.
P0ED2 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 10 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0ED2
- Less power in electric mode
- Shorter electric range
- MIL and battery warning
Common causes of P0ED2
- Most likelyAged module in unit F with lost capacity
- PossibleCell with internal leakage drained during standstill
- PossibleHigh-resistance connection inside unit F dropping voltage under load
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hv battery fBms
What each part of P0ED2 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| D2 | The exact fault in that area. |
What to do next
- Note P0ED2 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0ED2
What does P0ED2 mean?
P0ED2 means "Hybrid/EV Battery F Voltage Low". P0ED2 means hybrid/EV battery F delivers less voltage than the controller predicts from current draw and state of charge. It is a generic code, so it means the same on every make.
Is it safe to drive with P0ED2?
Drive gently and only to a workshop. With P0ED2 the car can go into limp mode (reduced power) to protect itself.
Will P0ED2 fail an emissions test?
Yes, it can. P0ED2 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0ED2 to fix?
Difficulty: workshop only. A typical repair takes 1 to 10 hours of work. This is a job for a workshop.
Will P0ED2 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.