P0E45

Hybrid/EV Battery Pack Voltage Sense E Circuit Range/Performance

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
The car goes into emergency mode
Unusual battery level readings
Problems with charging a high-voltage battery

Causes

Open or short circuit in the measurement circuit
Battery voltage sensor fault
Damage to connectors or corrosion of contacts
Problems with the Battery Monitoring Module (BMS)
High voltage battery fault

How to Fix

Check the integrity of the voltage measurement circuit
Inspect and clean all connectors in the circuit
Check voltage sensor readings
Test the Battery Management Module (BMS)
Repair only from an authorized dealer

Related codes

P0E46 P0E47 P0E44