P0B34

High Voltage Service Disconnect Circuit Performance

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Hybrid system does not turn on
Dashboard warning light
Reduced engine power
Errors in the high voltage system

Causes

Open or short circuit in the circuit
Faulty trip relay
Problems with the control module
Contact corrosion
Wiring harness damage

How to Fix

Check the integrity of the shutdown circuit
Check relays and fuses
Diagnose the control module
Check connections and contacts
Repair only from an authorized dealer

Related codes

P0B33 P0B35 P0B36