U3530

High Voltage System Interlock Circuit J High

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$6–89 (est.)

Symptoms

Check Engine Light Is On
Disabling the High Voltage System
Slow performance or inability to start
Warning messages on the dashboard
The car goes into emergency mode

Causes

Open circuit in HV interlock circuit
Short circuit in wiring
Damaged high voltage system connectors
Contact corrosion
One of the HVIL components is faulty

How to Fix

Visual inspection of high-voltage connectors and wiring
Checking the integrity of the interlock circuit
Cleaning contacts from corrosion
Replacing damaged components
Software error reset after repair

Related codes

U3520 U3540 U3550