P0B45

Hybrid/EV Battery Voltage Sense C Circuit

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–556 (est.)

Symptoms

Check Engine light comes on
Reduced vehicle power
Switching to emergency mode
Battery charging problems
Unstable operation of the hybrid system

Causes

Open or short circuit in the sensor circuit
Poor contact in connectors
Section C voltage sensor fault
Wiring harness damage
Problems with the battery management module

How to Fix

Check the integrity of the sensor circuit
Inspect connectors for corrosion
Check sensor resistance
Scan Battery Management Module
If necessary, replace the sensor or repair the wiring

Related codes

P0B44 P0B46 P0B47