P0ECEHybrid/EV Battery E Voltage Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0ECE sets when the voltage of hybrid/EV battery E remains below the window the controller expects for the present load and charge. Its counterparts are P0ECF for too high and P0ECD for unstable readings. No manufacturer documents P0ECE publicly. Ford publishes a comparable low test for battery A (P0B25) on its 2019 hybrids, based on calculated state of charge: if any cell reaches 0 % for 10 seconds with the main contactors closed, or for 90 seconds with them open, the code is set. A unit that discharged itself during long standstill, a module with an internal short, or a balancing circuit that keeps draining one group can pull unit E down. The controller then reduces discharge power, so electric range and boost shrink and the engine runs more often on hybrids.
- What you may notice
- Reduced electric range and acceleration
- Engine starts more often, EV mode unavailable
- MIL and battery warning
- Likely causes
- LikelyUnit E deeply discharged after long standstill or a high self-discharge cell
- PossibleInternal short or capacity loss in a module of unit E
- RareBalancing switch stuck on and draining one cell group
- RareVoltage sense fault reading low
- 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.