P2C89
Hybrid/EV Battery System Precharge Current Too High
During the HV battery precharge sequence, the inrush current exceeds the calibrated maximum. Indicates short on the DC-link side or insufficient precharge resistance.
- 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.
- Short on DC-link (capacitor or load)Common
- Precharge resistor shortedPossible
- Pack cell imbalance approaching service thresholdLess likely
Parts involved
- Hybrid Precharge Resistor
- Dc Link Capacitor
- Bms
P2C89 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.