P0A9C

Hybrid/EV Battery Temperature Sensor A Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Increased fuel consumption (for hybrids)
Error message on display
Limiting the operation of the electric motor

Causes

Battery temperature sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in connectors
Wiring harness damage
Problems with the battery management module

How to Fix

Check the resistance of the temperature sensor
Inspect the sensor circuit for damage
Check contacts in connectors
Replace temperature sensor if necessary
Reset the error and check the system operation

Related codes

P0A9D P0A9B P0A80