U351D

High Voltage System Interlock Circuit E

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–222 (est.)

Symptoms

The malfunction indicator on the dashboard lights up
The car may go into emergency mode
Reduced power or inability to start
Disabling the High Voltage System
Errors in other high voltage systems

Causes

Open or short circuit in the interlock circuit
Poor contact in high voltage system connectors
Lock sensor malfunction
Wiring harness damage
Problems in the high voltage system control module

How to Fix

Visual inspection of high voltage system wiring and connectors
Checking the integrity of the interlock circuit
Testing blocking sensors
Replacing damaged components
Repair only from an authorized dealer

Related codes

U351E U351F U3520