OBD Guide

P0C0B

Drive Motor A Inverter Power Supply Circuit/Open

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$167–556 (est.)

Symptoms

  • Motor power loss
  • Check Engine light comes on
  • The vehicle goes into emergency mode
  • Unusual noises from the electric motor
  • Reduced performance of the hybrid system

Causes

  • Open circuit in the inverter power supply
  • Wiring harness damage
  • Motor inverter malfunction
  • Problems with control electronics
  • Corrosion or poor contact in connectors

How to Fix

  1. Check the integrity of the inverter power supply circuit
  2. Inspect and, if necessary, replace the wiring harness
  3. Check the condition of connectors and contacts
  4. Test the motor inverter
  5. Replace the inverter if necessary

Related codes

Error P0C0B by Vehicle Brand