OBD Guide

B0127

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

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Lack of power in the 220V outlet
  • Dashboard warning light
  • The converter does not turn on
  • Activation of vehicle protective systems

Causes

  • Open circuit in the output circuit wiring harness
  • Short circuit in high voltage circuit
  • DC/AC converter malfunction
  • Damaged output connector A
  • Contact corrosion
  • Circuit Grounding Problems

How to Fix

  1. Visually inspect the wiring harness and connectors for damage
  2. Checking the voltage at the output of the converter with a multimeter
  3. Diagnosis of resistance in a high voltage circuit
  4. Checking Ground Continuity
  5. Replacing damaged circuit components
  6. Reset error codes and recheck

Related codes

Error B0127 by Vehicle Brand