What does code B012C mean?

DTC codes / B01xx · Airbags, seats, doors, lights and comfort systems / B012C

B012CDC/AC Converter A High Voltage Power Outlet Control Module "A"

B012C indicates that the body control module (BCM) has detected a high-voltage condition on the control circuit for power outlet converter A, which is the DC-to-AC inverter that provides household-style AC power to the vehicle's outlets. The BCM monitors the converter's high-voltage output and sets this code when the voltage exceeds the expected range, often due to a fault inside the converter or a wiring problem.

SystemBody

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaAirbags, seats, doors, lights and comfort systems

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.