P0AC7

Hybrid/EV Battery Temperature Sensor B Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Reduced performance of the hybrid system
Power limitation
Incorrect battery temperature readings on the dashboard

Causes

Faulty battery temperature sensor B
Open or short circuit in the sensor circuit
Bad contacts in connectors
Wiring harness damage
Battery management module malfunction

How to Fix

Check the continuity of the temperature sensor circuit
Inspect connectors and contacts for corrosion or damage
Check the resistance of the temperature sensor
Replace faulty temperature sensor
Test the operation of the system after repair

Related codes

P0AC6 P0AC8 P0AC9