U3544

High Voltage System Interlock Circuit O High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Warning message on dashboard
Engine power limitation
Inability to start the high voltage system
The vehicle goes into emergency mode
Fault indicator flashing

Causes

Open circuit in the locking circuit
Poor contact in connectors
Lock sensor malfunction
Wiring harness damage
Problems with the high voltage system control module

How to Fix

Check the integrity of the locking circuit
Inspect and clean all contacts in the circuit
Check the functionality of the lock sensor
Scan the control module for additional errors
Repair only from an authorized dealer

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