P2C46

Battery Isolation/Voltage Stabilization Control Circuit High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–222 (est.)

Symptoms

Check Engine light comes on
Reduced performance of the hybrid system
Battery charging problems
The car goes into emergency mode

Causes

Battery Isolation Control Module Malfunction
Damage to the circuit wiring harness
Problems with the battery or its connections
Malfunction of voltage sensors
Software errors in the control module

How to Fix

Check the condition of the battery and its connections
Inspect the wiring harness for damage
Check the operation of the battery isolation control module
Read and analyze error codes in the control module
Update control module software if necessary

Related codes

P2C45 P2C47 P0AA6