P0B84

Hybrid/EV Battery Voltage Sense O Circuit High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
Reduced performance of the hybrid system
Reducing electric range
Incorrect display of battery charge level
The vehicle goes into emergency mode

Causes

Battery voltage sensor fault
Open or short circuit in the sensor circuit
Damage to connectors or corrosion of contacts
Battery management module malfunction
Problems with the control module software

How to Fix

Check the integrity of the wiring and connectors in the sensor circuit
Test battery voltage sensor
Check fuses and relays associated with the system
Scan the battery management module for errors
If necessary, replace the sensor or control module

Related codes

P0B85 P0B83 P0A80