P0B64

Hybrid/EV Battery Voltage Sense I Circuit Range/Performance

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Battery charging problems
Incorrect charge level readings
The car goes into emergency mode

Causes

Battery voltage sensor fault
Open or short circuit in the circuit
Problems with the battery management module
Contact corrosion
Wiring harness damage

How to Fix

Check battery voltage sensors
Check the integrity of the circuit and contacts
Scan the battery management module for errors
Replace damaged components
Repair only from an authorized dealer

Related codes

P0B65 P0B66 P0B67