OBD Guide

P0EF5

Drive Motor C Temperature Sensor Circuit Intermittent/Erratic

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Unstable engine operation
  • Increased fuel consumption
  • Check Engine light comes on
  • Reduced engine power
  • Possible engine overheating

Causes

  • Poor contact in the sensor connector
  • Open or short circuit in the sensor circuit
  • Temperature sensor malfunction
  • Problems with the engine control unit
  • Contact corrosion

How to Fix

  1. Check the continuity of the temperature sensor circuit
  2. Check the contacts in the sensor connector
  3. Replace temperature sensor if necessary
  4. Check the engine control unit for errors
  5. Clean contacts from corrosion

Related codes

Error P0EF5 by Vehicle Brand