U353C

High Voltage System Interlock Circuit M High

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine light comes on
Engine power limitation
Inability to start the high voltage system
Error message on the dashboard
Problems with charging a high-voltage battery

Causes

Broken wire in the interlock circuit
Damaged or oxidized contacts
Malfunction of the high voltage system connector
Problems with the high voltage system control unit
Mechanical damage to the wiring harness

How to Fix

Check the integrity of the locking circuit
Inspect connectors and contacts for damage
Check the resistance in the circuit
Replace damaged wires or connectors
Repair only from an authorized dealer

Related codes

U353A U353B U353D