U3532

High Voltage System Interlock Circuit K Performance

Severity

🚨 Critical

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–556 (est.)

Symptoms

Check Engine light comes on
Reduced vehicle power (hybrids)
Inability to start the electric motor
High voltage system fault warning
The car goes into emergency mode

Causes

Broken wiring in the HVIL circuit
Oxidation or damage to contacts
Malfunction of the high voltage connector
High Voltage Control Module Problems
Mechanical damage to the wiring harness

How to Fix

Visual inspection of high-voltage connectors and wiring
Checking HVIL circuit continuity with a multimeter
Cleaning contacts from oxides
Replacing damaged connectors or wires
High Voltage Control Module Diagnostics
Repair only from an authorized dealer

Related codes

U3531 U3533 P0AA6