P0B7D

Hybrid/EV Battery Voltage Sense N Circuit Range/Performance

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–556 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Reducing electric range
Incorrect display of battery charge level
The car may go into emergency mode

Causes

Battery voltage sensor malfunction
Damaged or corroded wiring in the measuring circuit
Poor contact in the connectors of the measuring system
Problems with the Battery Management Module (BMS)
Degradation or failure of battery cells

How to Fix

Diagnose the high-voltage system using a scanner
Check the continuity and resistance of the measuring circuit
Inspect the connectors and contacts of the voltage sensors
Test or replace faulty voltage sensors
If necessary, replace damaged battery modules
Repair only from an authorized dealer

Related codes

P0B7C P0B7E P0B7F