P0AAC

Hybrid/EV Battery Pack Air Temperature Sensor A Circuit

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

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

Causes

Battery temperature sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in sensor circuit connectors
Corroded contacts or damaged wiring
Battery management module malfunction

How to Fix

Check the continuity of the temperature sensor circuit
Inspect connectors and contacts for damage
Check the resistance of the temperature sensor
If necessary, replace the temperature sensor
Check the operation of the battery management module

Related codes

P0AAD P0AAE P0AAB