P0EDFHybrid/EV Battery Pack D 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
- P0EDF belongs to the fourth section of the traction battery. It is not a sensor or wiring code but a capacity and power judgement: the battery controller has concluded that section D can no longer deliver what the maker expects of a healthy unit. Audi maps P0EDF00 on the Q5 PHEV to battery group 4 in the battery management unit 008C. Its bulletin 2079556/1 of September 2025 describes the workshop path: the MIL is on, guided fault finding offers no measure, so the high-voltage module behind the stored entry is removed and a new one fitted; if more than two modules are flagged, a technical assistance ticket comes first. Other makers have not published the code. Because only one module is replaced, the cost is far below a full pack. P0EDE and P0EE0 cover the adjacent sections.
- What you may notice
- MIL on
- Reduced electric range and power
- Likely causes
- LikelyHigh-voltage module of group 4 worn out
- PossibleSingle weak cell pulling the section down
- RareEvaluation logic of the battery controller
- 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: €300 – €5,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.