P2CD0Hybrid/EV Battery Pack K Deterioration
- 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
- With P2CD0 the battery controller reports that section K, the eleventh separately judged part of the high-voltage battery, has exceeded its ageing limit. Such a verdict normally rests on comparing what this section stores and delivers with its neighbours over many charge cycles, so it rarely appears suddenly after one event. No manufacturer publishes P2CD0; published section-level codes stop at eight groups (Audi Q5 PHEV, P2CCD). Only a battery split into eleven or more monitored units would ever reach it. California's OBD rule requires such codes to narrow faults down to the smallest unit that can be replaced. Before a module is renewed, a thermal cause should be ruled out, since overheating of section K is reported separately as P2D4F. Range and available power drop, and the MIL usually lights.
- What you may notice
- Warning lamp for engine or hybrid system
- Shorter range on a full charge
- Weaker acceleration on battery power
- Likely causes
- LikelyCells of section K lost capacity faster than the other sections
- PossibleInternal resistance of section K increased, limiting power
- RareUneven coolant flow leaving section K warmer over years
- 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: €400 – €6,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.