B0127
DC/AC Converter A High Voltage Power Outlet "A" Circuit/Open
Open circuit on the high-voltage power outlet "A" of DC/AC converter A. The outlet supplies 110/230 V AC from the HV battery on EVs/hybrids (vehicle-to-load).
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Common causes
Ordered by how often each turns out to be the cause.
- Outlet wiring openCommon
- Pin pushed back out of connector bodyLess likely
- Cracked solder joint inside the module or sensorLess likely
Parts involved
- Dc AC Converter A
- Hv Outlet A
B0127 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.