P0DE2Hybrid/EV Battery Cell Balancing Circuit N 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
- P0DE2 closes Ford's list of balancing codes: circuit N does not discharge when commanded. Ford's 2018 hybrid summary has the BECM judge this during a 100 ms window at key-on, contactors still open, comparing each of the six cells with the average against 75 mV over two power cycles. A switch that stays open has no immediate effect on driving, but the imbalance adds up. Intersil's application note AN141 puts numbers on this: cells count as matched when their capacities lie within 3 percent, and a gap of only 150 mV at full charge can cost a series pack a quarter of its capacity or more. Group N will therefore be full first and limit what the whole pack can store. Stuck-on counterpart: P0DE1.
- What you may notice
- Check engine light without driving complaint
- Charging ends early because group N is full first
- Electric range shrinking over months
- Likely causes
- LikelyOpen bleed resistor in circuit N
- PossibleBalancing switch of group N not turning on
- RareCell tap of group N detached from the busbar
- 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 – €4,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.