OBD Guide

P243B

Particulate Filter Restriction - Forced Limited Power Bank 2

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167–556 (est.)

Symptoms

  • Reduced engine power
  • Activating emergency mode
  • Increased fuel consumption
  • Black smoke from the exhaust pipe
  • Check Engine indicator on the dashboard

Causes

  • DPF clogged
  • Malfunction of exhaust gas pressure sensors
  • Problems with the DPF regeneration system
  • Low fuel quality
  • EGR valve malfunction

How to Fix

  1. Check the condition of the particulate filter
  2. Perform forced DPF regeneration
  3. Check the operation of the exhaust gas pressure sensors
  4. Clean or replace the particulate filter if necessary
  5. Check the EGR system for malfunctions

Related codes

Error P243B by Vehicle Brand