P0BBA

Hybrid/EV Battery Voltage Sense Z Circuit Low

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Hybrid system power reduction
Increased fuel consumption (for hybrids)
Warning messages on the dashboard
Reduced range (for electric vehicles)
Battery charging problems

Causes

Voltage sensor fault Z
Open or short circuit in the circuit
Connector problems or contact corrosion
Battery module failure
Problems with the Battery Management System (BMS)

How to Fix

Check the integrity of the voltage measurement circuit Z
Inspect and clean connector contacts
Check the operation of voltage sensors
Test the battery module
Update or reflash the battery management system (BMS)

Related codes

P0BBB P0BBC P0A80