P0B7A

Hybrid/EV Battery Voltage Sense M Circuit High

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
Reduced hybrid system efficiency
Incorrect display of battery charge level
Vehicle power limitation
The vehicle goes into emergency mode

Causes

Hybrid battery voltage sensor malfunction
Damage or corrosion of wiring in the measurement circuit
Poor contact in the measuring circuit connectors
Battery management module (BMS) malfunction
Problems with high voltage battery

How to Fix

Check the condition of the wiring and connectors in the measurement circuit
Test battery voltage sensors
Check Battery Management Module (BMS) parameters
If necessary, replace faulty components
Reset the error and take a test drive

Related codes

P0B79 P0B7B P0AFA