P0EDDHybrid/EV Battery Pack B Deterioration
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0EDD is the state-of-health verdict for the second section of a traction battery: section B has lost so much capacity or gained so much internal resistance that it falls below the maker's limit. P0A7F covers section A, P0EDE to P0EE1 sections C to F. Audi counts the Q5 PHEV (2020-2024) battery in groups and names P0EDD00 as group 2 deterioration in the battery management unit 008C; with the MIL on and guided fault finding silent, TSB 2079556/1 says to renew the module named by the entry. FCA uses the code on the Pacifica Hybrid: 08-299-25 extends warranty and replaces the 400 V pack, while a 2025 STAR case first checks fuses, wiring and BPCM software, then resets P0EDD in the BPCM. On the 2021 Wrangler, 08-168-23 calls it a false MIL fixed by BPCM software.
- What you may notice
- MIL or hybrid system warning on
- Noticeably shorter electric range
- Engine runs more often, less electric assist
- Likely causes
- LikelyBattery module or cell group in section B aged beyond its limit
- PossibleBattery controller software misjudging state of health (FCA reflash cases)
- RarePack defect covered by a warranty extension (Pacifica Hybrid)
- 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 – €12,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.