P0DAEHybrid/EV Battery Cell Balancing Circuit A Stuck Off
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- With P0DAE the controller has commanded balancing on circuit A, yet nothing happens: the switch stays open or the bleed resistor is broken, so the targeted cells keep their charge. Ford documents the code for its hybrid BECM; in the 2014 OBD summary the verdict rests on a 100 ms check at power-up with open contactors, in which one cell of the six-cell group lying beyond 75 mV from the average on two successive starts is enough. For a related code, GM checks on eAssist with the ignition off that the cell moves by more than 0.1 V once the resistor is switched in. The penalty is slow: the high cells limit charging, the pack loses usable capacity and the overall verdict P0DAB may follow.
- What you may notice
- MIL and battery system warning
- Charging ends early because individual cells reach full first
- Growing cell voltage spread in the live data
- Likely causes
- LikelyBleed resistor of circuit A open or its solder joint cracked
- PossibleBalancing transistor failed open
- PossibleBroken balancing/sense lead or terminal between module and cells
- 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 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.