P0AE9

Hybrid/EV Battery Temperature Sensor D Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Reduced vehicle power
The car goes into emergency mode
Incorrect battery temperature readings on the dashboard
Reduced performance of the hybrid system

Causes

Battery temperature sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in sensor connectors
Wiring harness damage
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
Check the resistance of the temperature sensor
Replace faulty temperature sensor
Check and replace wiring harness if necessary

Related codes

P0AEA P0AEB P0AEC