P0B5A

Hybrid/EV Battery Voltage Sense G Circuit Range/Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Incorrect battery level display
Deteriorating fuel economy
Limitation of operation in electric mode

Causes

Battery voltage sensor fault
Damage to the measuring circuit wiring harness
Poor contact in connectors
Problems with the Battery Management Module (BMS)
Corrosion or oxidation of contacts

How to Fix

Check the integrity of the measuring circuit wiring harness
Inspect and clean connector contacts
Check the functionality of the voltage sensor
Test the Battery Management Module (BMS)
Repair only from an authorized dealer

Related codes

P0B59 P0B5B P0B5C