P0B9A

Hybrid/EV Battery Voltage Sense T Circuit

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Reducing electric range
Battery charging problems
Switching to emergency operation

Causes

Open or short circuit in the voltage sensor circuit
Battery voltage monitoring module malfunction
Wiring Harness Problems
Contact corrosion
Malfunction of the highest voltage battery

How to Fix

Check the integrity of the voltage sensor circuit
Test the voltage control module
Inspect and clean contacts
Check the condition of the high-voltage battery
Replace damaged components

Related codes

P0B9B P0B9C P0B99