P0ABB

Hybrid/EV Battery Pack Voltage Sense A Circuit Range/Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–167 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Reducing electric range
Incorrect battery level display
The vehicle goes into emergency mode

Causes

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

How to Fix

Check the continuity of the voltage sensor circuit
Inspect connectors and contacts for corrosion or damage
Check the functionality of the voltage sensor
Scan the battery management module for errors
If necessary, replace the voltage sensor or repair the wiring

Related codes

P0ABC P0AB9 P0AFA