P0ABA

Hybrid/EV Battery Pack Voltage Sense A Circuit

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check engine light comes on
Reduced power or performance
Battery charging problems
Driving mode limitation
Unusual battery level readings

Causes

Open or short circuit in the sensor circuit
Battery voltage sensor fault
Connector problems or contact corrosion
Battery management module (BMS) malfunction
Wiring harness damage

How to Fix

Check the continuity of the voltage sensor circuit
Inspect connectors and contacts for corrosion
Check voltage sensor readings using a scanner
Test or replace faulty voltage sensors
If necessary, replace the battery management module

Related codes

P0ABB P0A80 P0A7F