OBD Guide

P2D3B

Hybrid/EV Discharge System Fault

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$167–556 (est.)

Symptoms

  • Reduced vehicle power
  • Warning messages on the dashboard
  • Speed limit
  • The car goes into emergency mode
  • Unusual sounds from the high voltage system

Causes

  • High voltage battery fault
  • Problems with the energy management system
  • Damage to high voltage cables
  • Faulty high voltage contactors
  • Software errors in the control system

How to Fix

  1. Checking the condition of the high-voltage battery
  2. Energy management system diagnostics
  3. Inspection of high voltage connections and cables
  4. Checking high voltage contactors
  5. Control system software update
  6. Repair only from an authorized dealer

Related codes

Error P2D3B by Vehicle Brand