P0B8D

Hybrid/EV Battery Voltage Sense Q Circuit Low

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
Increased fuel consumption
The car may go into emergency mode
Unstable operation of the hybrid system

Causes

Battery module voltage sensor fault Q
Damage to wiring or connectors in the measurement circuit
Corrosion of contacts in the voltage measurement circuit
Problems with the Q battery module itself
Malfunction of the hybrid system control module

How to Fix

Check the integrity of the wiring and connectors in the measurement circuit
Test module Q voltage sensor
Check the condition of the battery module Q
Scan the control module memory for additional trouble codes
If necessary, replace faulty components

Related codes

P0B8C P0B8E P0B8F