OBD Guide

P0E5A

DC/DC Converter Temperature Sensor C Circuit Low

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced performance of the hybrid system
  • DC/DC converter overheating
  • Vehicle power limitation
  • Incorrect temperature readings in diagnostic equipment

Causes

  • Temperature sensor fault C
  • Open or short circuit in the sensor circuit
  • Poor contact in circuit connectors
  • Wiring harness damage
  • Converter control unit malfunction

How to Fix

  1. Check the continuity of the temperature sensor circuit
  2. Inspect connectors and contacts for corrosion or damage
  3. Check the resistance of the temperature sensor
  4. Replace temperature sensor if necessary
  5. Check and, if necessary, replace the converter control unit

Related codes

Error P0E5A by Vehicle Brand