P0B54

Hybrid/EV Battery Voltage Sense F Circuit

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Reducing electric range
Incorrect battery level display
Activation of emergency operation

Causes

Open or short circuit in the F-circuit of the sensor
Oxidation of contacts in circuit connectors
Battery voltage sensor fault
Problems with the Battery Management Unit (BMS)
Damage to the wiring harness near the battery

How to Fix

Check the integrity of the F-circuit of the voltage sensor
Inspect and clean the contacts in the connectors
Test battery voltage sensor
Check the functionality of the BMS module
Repair only from an authorized dealer

Related codes

P0B53 P0B55 P0B56