P0DABHybrid/EV Battery Cell Balancing Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0DAB is the overall verdict on cell balancing: the battery controller sees that bleeding charge off the fuller cells no longer brings the pack back into line, so the spread between cells stays too wide. CARB 13 CCR 1968.2 (e)(15.2.3) requires hybrids to check exactly this. Mazda sets it on the 48 V M Hybrid Boost of the CX-90 and CX-70 (MHB module: P0DAB:17; SGC2/DMCM: P0DAB:00) with the check engine light; if it returns at once after clearing, the 48 V battery is replaced, otherwise program MSP66 reflashes. Jeep lists P0DAB-00 with MIL for Wrangler 4xe and Grand Cherokee 4xe and cures it with BPCM software. Faults of a single balancing circuit carry their own codes from P0DAC on.
- What you may notice
- Check engine light and hybrid system warning in the cluster
- Mild hybrid assist, start-stop and regeneration switched off (engine-only operation on Mazda)
- Reduced electric range or usable battery capacity
- Likely causes
- LikelyBattery controller software that judges balancing too strictly (FCA BPCM and Mazda MSP66 reflash)
- LikelyCells aged unevenly so the spread grows faster than balancing can correct it
- PossibleInternal fault in the battery assembly (Mazda 48 V battery replaced when the code returns at once)
- RareOne or more balancing switches or resistors no longer working
- 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 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.