OBD-II code · Body
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).
Is it safe to drive with B0127?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyOutlet wiring open
- Less likelyPin pushed back out of connector body
- Less likelyCracked solder joint inside the module or sensor
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Dc AC Converter A, Hv Outlet A
Related codes
- B0129DC/AC Converter A High Voltage Power Outlet "C" Circuit/Open
- B012ADC/AC Converter A High Voltage Power Outlet "D" Circuit/Open
- B012BDC/AC Converter A High Voltage Power Outlet "E" Circuit/Open
- B0124Night Vision Camera
- B0125Driver Side Mirror Position Sensor
- B0126Passenger Side Mirror Position Sensor
- B0128Passenger Occupant Detection System Malfunction
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.