P0B59

Hybrid/EV Battery Voltage Sense G Circuit

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Reduced electric range
Incorrect battery level display
The car goes into emergency mode

Causes

Open or short circuit in the sensor circuit
Battery voltage sensor fault
Connector problems or contact corrosion
Battery management module malfunction
Damage to the high voltage system wiring harness

How to Fix

Check the integrity of the voltage measurement circuit
Inspect and clean connector contacts
Test battery voltage sensors
Check the operation of the battery management module
Replace damaged circuit components

Related codes

P0B56 P0B57 P0B58