P0BC4

Hybrid/EV Battery Temperature Sensor E Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–83 (est.)

Symptoms

Check Engine Light Is On
Reduced battery power or efficiency
Limitation of hybrid system operation
Error message on the dashboard

Causes

Open or short circuit in the sensor circuit
Battery temperature sensor malfunction
Connection problems or connector corrosion
Battery control unit malfunction
Wiring harness damage

How to Fix

Check the continuity of the temperature sensor circuit
Inspect connectors and connections for corrosion or damage
Test the temperature sensor with a multimeter
If necessary, replace the temperature sensor
Check the condition of the battery control unit

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