OBD Guide

P0B36

High Voltage Service Disconnect Circuit High

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$89–278 (est.)

Symptoms

  • Check Engine Light Is On
  • High voltage system fault warning
  • Reduced power or inability to start
  • Hybrid system failure
  • Clicking or burning smell from the high voltage compartment

Causes

  • High voltage cut-off relay malfunction
  • Short circuit in trip circuit
  • Damage to high voltage wiring
  • Problems in the high voltage system control module
  • Contact corrosion in the service connector

How to Fix

  1. High Voltage Trip Circuit Condition Diagnosis
  2. Check and replace the emergency shutdown relay if necessary
  3. Inspection and repair of high-voltage wiring
  4. Diagnostics of the high-voltage system control module
  5. Repair only from an authorized dealer

Related codes

Error P0B36 by Vehicle Brand