OBD Guide

B012B

DC/AC Converter A High Voltage Power Outlet E Circuit/Open

B012B is an OBD-II diagnostic trouble code meaning: DC/AC Converter A High Voltage Power Outlet E Circuit/Open. Common causes: broken wiring harness, dc/ac converter malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Disabling a high voltage outlet
  • Malfunction of additional systems powered by the converter
  • The malfunction indicator on the dashboard lights up

Causes

  • Broken wiring harness
  • DC/AC converter malfunction
  • Problems with control electronics
  • Contact corrosion

How to Fix

  1. Check the integrity of the wiring harness
  2. Check the voltage at the output of the converter
  3. Diagnose control electronics
  4. Replace DC/AC converter if necessary

Related codes

Error B012B by Vehicle Brand

FAQ

What does the B012B code mean?

B012B is an OBD-II diagnostic trouble code that indicates: DC/AC Converter A High Voltage Power Outlet E Circuit/Open

What causes a B012B error code?

The most common causes of B012B include: Broken wiring harness; DC/AC converter malfunction; Problems with control electronics; Contact corrosion.

How do I fix a B012B diagnostic trouble code?

To fix B012B: Check the integrity of the wiring harness. Check the voltage at the output of the converter. Diagnose control electronics. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B012B?

Limited driving only, diagnose soon

How much does it cost to fix B012B?

The estimated repair cost for B012B is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat