OBD Guide

P0BC2

Hybrid/EV Battery Temperature Sensor E Circuit

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Check Engine light comes on
  • Hybrid system power reduction
  • Increased fuel consumption (in hybrids)
  • Limiting the operation of the electric motor
  • Error message on display

Causes

  • Battery temperature sensor fault E
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Contact corrosion
  • Problems with the battery management module

How to Fix

  1. Check the integrity of the temperature sensor
  2. Check the condition of the sensor circuit for open circuit and short circuit.
  3. Clean sensor connector contacts
  4. Check connection to battery management module
  5. If necessary, replace the temperature sensor

Related codes

Error P0BC2 by Vehicle Brand