P0CAA

Hybrid/EV Battery Temperature Sensor M Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Reduced performance of the hybrid system
Warning messages on the dashboard
Reducing the range of an electric vehicle
Battery overheating in extreme cases

Causes

Battery temperature sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Problems with the battery management module

How to Fix

Check the continuity of the temperature sensor circuit
Inspect the connectors and contacts of the sensor
Test battery temperature sensor
Replace temperature sensor if necessary
Check and update battery management module software

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