P0AB1

Hybrid/EV Battery Pack Air Temperature Sensor B Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–89 (est.)

Symptoms

Check Engine light comes on
Reduced power or performance
Switching to emergency mode
Reduced range (for electric vehicles)
Error message on the dashboard

Causes

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

How to Fix

Check the integrity of the sensor circuit
Inspect connectors and contacts for corrosion or damage
Check the resistance of the temperature sensor
Replace the faulty sensor if necessary
Repair only from an authorized dealer

Related codes

P0AB0 P0AB2 P0AAC