P0AB5

Hybrid/EV Battery Pack Air Temperature Sensor B Circuit Intermittent/Erratic

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
Incorrect battery temperature readings
Reducing the range of an electric vehicle
Activation of emergency operation

Causes

Open or short circuit in the sensor circuit
Temperature sensor B fault
Poor contact in circuit connectors
Wiring harness damage
Battery management module malfunction

How to Fix

Check the continuity of the temperature sensor circuit
Check resistance and sensor signal
Inspect connectors and contacts for corrosion or damage
If necessary, replace temperature sensor B
Repair only from an authorized dealer

Related codes

P0AB6 P0AB7 P0AB8