U353E

High Voltage System Interlock Circuit N Performance

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–222 (est.)

Symptoms

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

Causes

Open or short circuit in the interlock circuit
Poor contact in high voltage system connectors
High Voltage Interlock Module Malfunction
Contact corrosion
Mechanical damage to wiring

How to Fix

Carry out diagnostics of the high-voltage system (only by qualified specialists)
Check the integrity of the locking circuit
Inspect and clean connector contacts
Replace damaged circuit components
Repair only from an authorized dealer

Related codes

U353F U353D U0100