U351C

High Voltage System Interlock Circuit D High

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Engine power limitation
Inability to start the high voltage system
Malfunction warning on the instrument panel
Reduced performance of the hybrid system

Causes

Open circuit in the high-voltage system interlock circuit
Damage to the high voltage system wiring harness
Oxidation or poor contact in connectors
One of the HVIL components is faulty
Damage to the insulation of high-voltage cables

How to Fix

Visual inspection of the high voltage system for damage
Checking the integrity of the interlock circuit
Diagnostics of connectors and contacts in the HVIL system
Replacing Damaged Interlock Circuit Components
Repair only from an authorized dealer

Related codes

U351A U351B U351D