P0DBEHybrid/EV Battery Cell Balancing Circuit E 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
- P0DBE means circuit E does nothing when told to bleed. The LaunchPoint patent US8598840B2 describes reading the cells while a planned bleed phase is running and treating a balancing side that shows no effect as faulted; this is the logic behind a stuck-off verdict. That patent also keeps a second balancing path in reserve, a reminder that some designs can carry on with reduced function. For the driver the code is mostly a long-term matter: group E stays high, charging ends sooner and capacity seems to fade. CARB 13 CCR 1968.2 asks for detection of such faults. Ford has carried P0DBE since its 2014 hybrid OBD summary, where a deviation above 75 mV within the six-cell circuit E must recur on two consecutive power-ups.
- What you may notice
- MIL and battery warning
- Apparent loss of capacity over weeks
- Likely causes
- LikelyBleed resistor of circuit E open
- PossibleBalancing transistor of circuit E does not turn on
- RareEnable signal for group E not reaching the module
- 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.