P0B7B

Hybrid/EV Battery Voltage Sense M Circuit Intermittent/Erratic

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Unstable operation of the hybrid system
Reduced battery efficiency
Errors in displaying battery level

Causes

Damage or corrosion of connectors in the voltage measurement circuit
Open or short circuit in wiring
Battery module voltage sensor malfunction
Problems with M battery module
Malfunction of the hybrid system control unit

How to Fix

Check the integrity and condition of the wiring in the voltage measurement circuit
Inspect and clean connector contacts
Check the functionality of the voltage sensor of module M
Test the M battery module for internal faults
Check the operation of the hybrid system control unit

Related codes

P0B7A P0B7C P0B7D