P0B7C

Hybrid/EV Battery Voltage Sense N Circuit

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–222 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Reducing the range of an electric vehicle
Incorrect display of battery charge level
The vehicle goes into emergency mode

Causes

Open or short circuit in the voltage measurement circuit
Poor contact in voltage sensor connectors
Battery voltage sensor fault
Problems with the Battery Management Module (BMS)
Contact corrosion in a high voltage system

How to Fix

Check the integrity of the wiring in the voltage measurement circuit
Inspect and clean the sensor connector contacts
Check the functionality of the voltage sensors
Test the Battery Management Module (BMS)
Repair only from an authorized dealer

Related codes

P0B7B P0B7D P0B7E