P0B46

Hybrid/EV Battery Voltage Sense C Circuit Range/Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Switching to emergency mode
Reducing electric range
Incorrect battery level readings

Causes

Battery voltage sensor fault
Open or short circuit in the measurement circuit
Poor contact in connectors
Battery management module malfunction
Corroded contacts or damaged wiring

How to Fix

Check the integrity of the voltage measurement circuit
Inspect connectors and contacts for corrosion
Test voltage sensors
Check the operation of the battery management module
Repair only from an authorized dealer

Related codes

P0B45 P0B47 P0B44