P0B5B

Hybrid/EV Battery Voltage Sense G Circuit Low

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Hybrid system power reduction
Check Engine Light Illuminates
Switching to emergency mode
Reduced performance of the hybrid system
Battery charging problems

Causes

Voltage sensor fault G
Open or short circuit in the sensor circuit
Poor contact in circuit connectors
Problems with the hybrid system control module
High voltage battery fault

How to Fix

Check the continuity of the G sensor circuit
Check connections and connectors in the circuit
Test voltage sensor G
Check the operation of the hybrid system control module
Diagnose the condition of a high-voltage battery

Related codes

P0B5A P0B5C P0B59