OBD Guide

P0E55

DC/DC Converter Current Sensor A Circuit Intermittent/Erratic

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

Symptoms

  • Check Engine Light Is On
  • Problems charging a 12-volt battery
  • Unstable operation of electrical equipment
  • Reduced performance of the hybrid system
  • Error messages on the dashboard

Causes

  • Faulty DC/DC current sensor
  • Damaged or corroded connectors
  • Open or short circuit in the sensor circuit
  • Problems with DC/DC converter
  • Control unit malfunction

How to Fix

  1. Check the continuity of the current sensor circuit
  2. Inspect connectors and contacts for damage
  3. Check the functionality of the current sensor
  4. Test the DC/DC converter
  5. Update the control unit software if necessary

Related codes

Error P0E55 by Vehicle Brand