P0D19
Battery Charging System A High Voltage Interlock Circuit Intermittent/Erratic
The HV interlock circuit of battery charging system A reports a intermittent/erratic condition. Safety interlock chain may be compromised.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Interlock connector not seatedCommon
- Vibration affects contactPossible
- Connector with intermittent contact under vibrationLess likely
Parts involved
- Bcs A Hv Interlock
- Wiring Harness
- Bms
P0D19 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.