DI_a021 — Pack Overvoltage
Full alert identifier: DI_a021_packOvervoltage
Alert description
The drive interface (DI) electronic control unit (ECU) detects that the high voltage (HV) battery pack is over voltage enough to temporarily disable regenerative braking.
Potential impact
The DI ECU may disable regenerative braking.
Set condition
The DI ECU detects that the HV battery pack voltage is significantly over the max bus voltage while the vehicle is in Drive or Reverse.
Clear condition
Clears on the next drive cycle.
Signals to check
These diagnostic fields are associated with DI_a021. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Max Bus Voltage
DI_
|
V |
Pack Voltage
DI_
|
V |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of DI_a021.