P0DACHybrid/EV Battery Cell Balancing Circuit A
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0DAC reports an electrical fault in balancing circuit A, meaning the wiring, switch or monitoring chip behind it, not a balancing result. Audi uses it on the e-tron GT (2022-2026) in battery management address 008C and spells it out as an electrical fault of cell controller 1. Bulletin 2074056 explains that a short power interruption while the 12 V battery is reconnected can log this entry; the guided fault finding then proposes new HV modules, which Audi calls unnecessary and resets remotely. A later reporting case (2078729) pairs P0DAC00 with the red onboard supply lamp and a car that will not start. Audi already listed P0DAC00 for the 2016 A3 e-tron (bulletin 2046556), where new software cured it. Stuck states and implausible results are P0DAD to P0DAF.
- What you may notice
- Battery management warning or red onboard supply lamp
- Vehicle may refuse to start or enter drive readiness
- Diagnostic tester proposes replacing HV battery modules
- Likely causes
- LikelyBrief 12 V supply interruption, e.g. while reconnecting the 12 V battery (Audi e-tron GT)
- PossibleDefective cell monitoring controller or balancing switch of circuit A
- PossibleLoose or corroded sense/balancing lead connector at 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: €100 – €5,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.