Powertrain
Definition only
Lights the check engine lamp
P2C8B: Hybrid/EV Battery Interface Control Module B Performance
Standardized SAE J2012 code · P2Cxx codes
What does P2C8B mean?
The hybrid battery interface control module B reports a performance fault. Internal self-tests fail or response time outside calibration.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Common causes
- High Internal control module fault
- Medium Communication with BMS degraded
- Low Pack cell imbalance approaching service threshold
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2C8B on the same make and model first.
P2C8B in the community
Ask about P2C8BNo one has posted about P2C8B yet
Share your vehicle, the tool you used and what you tested — the first thread helps everyone who searches for this code.
Describe your P2C8B problem