P0B5E

Hybrid/EV Battery Voltage Sense H 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
The car goes into emergency mode
Problems with charging a high-voltage battery
Increased fuel consumption (for hybrids)

Causes

Open or short circuit in the voltage measurement circuit
Faulty battery voltage sensors
Connector problems or contact corrosion
Battery Management Module (BMS) malfunction
Damage to the high voltage system wiring harness

How to Fix

Check the integrity of the voltage measurement circuit
Inspect connectors and contacts for corrosion or damage
Test battery voltage sensors
Check the operation of the battery management unit (BMS)
Diagnose the condition of the high-voltage wiring harness
Repair only from an authorized dealer

Related codes

P0B5F P0B5D P0A80