U3539

High Voltage System Interlock Circuit M

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Reduced power or limited engine operation
Inability to start the high voltage system
Error message on the dashboard
Disabling the High Voltage Battery

Causes

Open or short circuit in the interlock circuit
High Voltage Lockout Sensor Malfunction
Wiring harness damage
Problems with the high voltage system control module
Corrosion of contacts in connectors

How to Fix

Check the integrity of the high voltage blocking circuit
Inspect and, if necessary, replace the locking sensors
Check the condition of the wiring harness and connectors
Scan the control module for additional errors
Repair only from an authorized dealer

Related codes

U3540 U3541 U3538