P0BAC

Hybrid/EV Battery Voltage Sense W Circuit High

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
The car goes into emergency mode
Hybrid system power reduction
Battery charging problems
Unusual charge level indicators on the dashboard

Causes

High voltage battery fault
Damage to control circuit wiring harness
Corrosion or poor contact in connectors
Battery voltage monitoring module malfunction
Circuit Grounding Problems

How to Fix

Check the condition of the high-voltage battery
Inspect the wiring harness and voltage control circuit connectors
Check resistance and continuity
Test the battery voltage monitoring module
Replace damaged components if necessary

Related codes

P0BAD P0BA6 P0A7F