U3522

High Voltage System Interlock Circuit F Performance

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Reduced vehicle power
The car goes into emergency mode
Inability to start the high voltage system
Error message on display

Causes

Open or short circuit in the interlock circuit
Damaged high voltage system connectors
Contact corrosion
Lock sensor malfunction
Problems with the high voltage system ECU

How to Fix

Check the integrity of the locking circuit
Inspect all connectors of the high-voltage system
Clean contacts from corrosion
Check blocking sensors
Scan the ECU for other errors
Repair only from an authorized dealer

Related codes

U3521 U3523 U3520