P0CB8

Hybrid/EV Battery Temperature Sensor P Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Reducing the range of an electric vehicle
Battery overheating
Error message on the dashboard

Causes

Faulty battery temperature sensor
Open or short circuit in the sensor circuit
Poor connection or corroded connectors
Wiring Harness Problems
Battery management module (BMS) malfunction

How to Fix

Check the continuity of the temperature sensor circuit
Inspect and clean connector contacts
Test the resistance of the temperature sensor
Replace faulty temperature sensor
Check BMS module software

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