Powertrain, generic · Hybrid propulsion

P0DE2 Hybrid/EV Battery Cell Balancing Circuit N Stuck Off

Check engine lightOn

EmissionsRelevant

Drive cycleRequired

Limp modeNo

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.

Likely causes

Open bleed resistor in circuit N

Balancing switch of group N not turning on

Cell tap of group N detached from the busbar

Symptoms

Check engine light without driving complaint
Charging ends early because group N is full first
Electric range shrinking over months

Repair estimate

DifficultyShop_onlyWorkshop job

Parts and labour€300–4,500

Time1.5–8 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

hv battery cell balancing circuit nbms

Related codes

P0DAB P0DE0 P0DE1 P0DE3 P0DDE P0DE7

References: law.cornell.edu, fordservicecontent.com, renesas.com.