OBD Guide

P249F

Excessive Time To Enter Closed Loop Particulate Filter Regeneration Control

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$39–167 (est.)

Symptoms

  • Increased fuel consumption
  • Reduced engine power
  • The 'Check Engine' light comes on
  • Message about the need for DPF regeneration
  • Increased exhaust smoke

Causes

  • Malfunction of exhaust gas temperature sensors
  • Clogged particulate filter
  • Problems with the fuel injection system
  • EGR valve malfunction
  • Low fuel quality

How to Fix

  1. Check the condition of the particulate filter
  2. Diagnose exhaust gas temperature sensors
  3. Check the functionality of the EGR system
  4. Perform forced DPF regeneration
  5. Check the condition of the fuel system

Related codes

Error P249F by Vehicle Brand