U3548

High Voltage System Interlock Circuit P High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
Reduced vehicle power
The car goes into emergency mode
Inability to start the high voltage system
Warning messages appear on the instrument panel

Causes

Open or short circuit in the interlock circuit
High Voltage Lockout Sensor Malfunction
Problems with high voltage relay
Wiring harness damage
Malfunction of the high-voltage system control module

How to Fix

Carry out diagnostics of the high-voltage system
Check the integrity of the locking circuit
Test blocking sensors
Check the condition of high-voltage relays
Repair only from an authorized dealer

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