P0C80

Hybrid/EV Battery Temperature Sensor G Circuit Intermittent/Erratic

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$39–133 (est.)

Symptoms

Hybrid system power loss
Warning message on dashboard
Reduced battery efficiency
The car goes into emergency mode
Extended charging time (for plug-in hybrids)

Causes

Poor contact in the sensor connector
Open or short circuit in the sensor circuit
Malfunction of the temperature sensor itself
Problems with the battery management module
Corrosion of connections in a high voltage system

How to Fix

Check the connections and connectors of the sensor
Check the integrity of the wires in the sensor circuit
Test the resistance of the temperature sensor
Replacing a faulty temperature sensor
Battery Management Module Diagnostics
Repair only from an authorized dealer