P0B9E

Hybrid/EV Battery Voltage Sense T Circuit Intermittent/Erratic

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–222 (est.)

Symptoms

Check engine light comes on
Reduced performance of the hybrid system
Unstable operation of the power plant
Reduced vehicle power
Errors in the battery management system

Causes

Open or short circuit in the sensor circuit
Poor contact in the measuring circuit connectors
Battery cell voltage sensor malfunction
Wiring harness damage
Problems with the battery management system

How to Fix

Check the integrity of the sensor circuit wiring
Inspect and clean connector contacts
Check the functionality of the voltage sensor
Test the battery management system
Repair only from an authorized dealer

Related codes

P0B9F P0BA0 P0B9D