B0128
DC/AC Converter A High Voltage Power Outlet B Circuit/Open
B0128 is an OBD-II diagnostic trouble code meaning: DC/AC Converter A High Voltage Power Outlet B Circuit/Open. Common causes: open circuit of the high-voltage converter, dc/ac converter malfunction. Estimated repair cost: $56–167.
Symptoms
- Lack of power at high-voltage consumers
- Multimedia devices or inverter do not work
- Check Engine light comes on
Causes
- Open circuit of the high-voltage converter
- DC/AC converter malfunction
- Poor contact in connectors
- Wiring harness damage
- Short circuit in the circuit
How to Fix
- Check the integrity of the high-voltage converter circuit
- Inspect connectors and contacts for oxidation
- Check the functionality of the DC/AC converter
- Visually inspect the wiring harness for damage
- Replace converter if necessary
Related codes
Error B0128 by Vehicle Brand
FAQ
What does the B0128 code mean?
B0128 is an OBD-II diagnostic trouble code that indicates: DC/AC Converter A High Voltage Power Outlet B Circuit/Open
What causes a B0128 error code?
The most common causes of B0128 include: Open circuit of the high-voltage converter; DC/AC converter malfunction; Poor contact in connectors; Wiring harness damage.
How do I fix a B0128 diagnostic trouble code?
To fix B0128: Check the integrity of the high-voltage converter circuit. Inspect connectors and contacts for oxidation. Check the functionality of the DC/AC converter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B0128?
Limited driving only, diagnose soon
How much does it cost to fix B0128?
The estimated repair cost for B0128 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat