OBD-II code · Powertrain (generic)

P0EDF Hybrid/EV Battery Pack B Deterioration

The BMS detects deterioration in HV battery pack section B. Capacity or internal resistance outside service limits.

Is it safe to drive with P0EDF?

The car may go into limp mode (reduced power). Get it diagnosed before a long trip.

Common causes

  • Most likelyCells aged - capacity reduced
  • PossibleInternal resistance increased
  • Less likelyPack cell imbalance approaching service threshold

Symptoms

  • EV/hybrid system warning light on
  • Reduced power output or limp mode
  • Charging may fail or be slowed
  • Reduced electric range

Repair at a glance

Difficulty
Hard
DIY friendly
Best left to a mechanic
Typical labour
4–24 h
Emissions test
Usually unaffected
After the fix
A drive cycle is needed before the light stays off
Parts involved
Hv Battery Pack B, Bms

Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.