U3533

High Voltage System Interlock Circuit K Low

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Reduced power or inability to start the engine
Error message on the dashboard
Disabling the High Voltage System
Problems with charging a high-voltage battery

Causes

Open circuit in high voltage blocking circuit
Short circuit to ground
Lock sensor malfunction
Wiring harness damage
Problems with the high voltage system control module

How to Fix

Check the integrity of the high voltage blocking circuit
Inspect connectors and wiring harness for damage
Check high voltage lockout sensor
Scan the high voltage system control module for errors
Repair only from an authorized dealer

Related codes

U3531 U3532 U3534