P2CD0
Hybrid/EV Battery Pack K Deterioration
The BMS detects accelerated deterioration in battery pack subsection K. Cell voltage delta, internal resistance, or capacity has dropped below threshold for the affected sub-pack.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Common causes
Ordered by how often each turns out to be the cause.
- Cells aged beyond compensationCommon
- Thermal stress shortened cell lifePossible
- Pack cell imbalance approaching service thresholdLess likely
Parts involved
- Hybrid Battery Pack K
- Bms
P2CD0 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.