P0E2D
Internal Control Module Hybrid/EV Battery Monitor Performance
The hybrid control module detects an internal performance fault on the HV battery monitor processing. SOC/SOH calculations may be unreliable.
- 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.
- Internal monitor processing faultCommon
- Inconsistent data from sensor modulesPossible
- Pack cell imbalance approaching service thresholdLess likely
Parts involved
- Hybrid Control Module
- Bms
P0E2D 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.