P0B4E

Hybrid/EV Battery Voltage Sense D Circuit Intermittent/Erratic

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
Incorrect display of battery charge level
The vehicle goes into emergency mode
Problems with charging a high-voltage battery

Causes

Damage to the voltage measurement circuit wiring harness
Oxidation or poor contact in connectors
Battery voltage sensor fault
Problems with the hybrid system control unit
Short circuit or open circuit

How to Fix

Check the integrity of the measuring circuit wiring harness
Clean and check all contacts in connectors
Test battery voltage sensor
Check the operation of the hybrid system control unit
Repair only from an authorized dealer

Related codes

P0B4D P0B4F P0B50