P0DE7Hybrid/EV Battery Pack Cell Voltage High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0DE7 is stored when a single cell of the high-voltage pack climbs above the upper voltage limit the battery controller permits. Overcharged lithium-ion cells age quickly and can become unsafe, so the controller usually restricts charging and regenerative braking until the cell is back in range. The only public manufacturer use found is Ram: bulletin 08-030-24 and its sister bulletins for the 2019-2024 Ram 1500 with eTorque mild hybrid (3.6 L V6 and 5.7 L V8) list P0DE7 together with cell supervisory, voltage sense and balancing codes and prescribe new BPCM software, pointing to a calibration cause. Other plausible causes are failed balancing, a cell with raised internal resistance during regen, or a drifting measurement chip. Low cell voltage is P0DE6, pack overvoltage P0AFB.
- What you may notice
- Malfunction indicator lamp on
- Weaker regenerative braking, charging limited
- Mild-hybrid assist or start-stop unavailable
- Likely causes
- LikelyBattery controller software or calibration (documented by Ram)
- PossibleCell balancing no longer bleeding off the highest cell
- PossibleAged cell with raised internal resistance overshooting during regen
- RareDrifting cell monitoring chip reporting too high a value
- 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: €80 – €5,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.