P0B15

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

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
The car goes into emergency mode
Unusual battery level readings

Causes

Battery voltage sensor fault
Damage to control circuit wiring harness
Poor contact in connectors
Problems with the Battery Monitoring Module (BMS)
Battery cell degradation

How to Fix

Check the integrity of the Sense B circuit wiring harness
Check connections and contacts in connectors
Test battery voltage sensors
Check the operation of the BMS module
Diagnose the condition of battery cells

Related codes

P0B14 P0B16 P0AFA