P0ED3Hybrid/EV Battery F Voltage High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0ED3 is logged once battery F of the hybrid/EV system climbs above its permitted maximum voltage. It is the high member of the F series, next to P0ED2 (low) and P0ED1 (unstable). No manufacturer documents P0ED3 publicly. GM's hybrid tables show how strictly overvoltage is treated at pack level: above 479 V the P0ABD monitor fails within one trip. Ford sets P0AFB when its pack stays above 362.2 V on plug-in or 327.8 V on full hybrids for 10 seconds. Within a single unit an excess voltage usually means its cells were charged further than the rest, for instance because the balancing circuit of that unit quit, or that its measuring channel reads high. Charging and regeneration stay restricted until the cause is found; a warning appears and plug-in charging may be refused.
- What you may notice
- Charging refused or regenerative braking weak
- MIL and battery warning
- Likely causes
- LikelyBalancing circuit of unit F failed, cells overcharged
- PossibleMeasuring channel of unit F reading too high
- RareCharger or regeneration control overshooting
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.