P0B4C

Hybrid/EV Battery Voltage Sense D Circuit Low

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
The car goes into emergency mode
Incorrect battery level readings
Problems with charging a high-voltage battery

Causes

Open or short circuit in the sensor circuit
Battery voltage sensor fault
Problems with wiring harness or contacts
Battery management module malfunction
Corrosion or poor connections in the circuit

How to Fix

Check the continuity of the voltage sensor circuit
Check connections and contacts in the circuit
Test battery voltage sensor
Check the operation of the battery management module
Repair only from an authorized dealer

Related codes

P0B4B P0B4D P0B4A