U3546

High Voltage System Interlock Circuit P Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Reduced vehicle power
Limitation of high voltage system operation
Possible problems with battery charging

Causes

Open or short circuit in the interlock circuit
Lock sensor malfunction
Problems with the high voltage connector
Control module malfunction
Contact corrosion

How to Fix

Check the integrity of the locking circuit
Check the condition of high-voltage connectors
Test blocking sensors
Check the control module for errors
Repair only from an authorized dealer

Related codes

U3545 U3547 U3550