OBD Guide

P24A1

Closed Loop Particulate Filter Regeneration Control At Limit - Temperature Too High

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

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Burning smell from the exhaust system
  • Overheating of the lower part of the car

Causes

  • Clogged particulate filter
  • Malfunction of exhaust gas temperature sensors
  • Problems with the fuel injection system
  • Regeneration control system malfunction
  • Mechanical damage to the exhaust system

How to Fix

  1. Diagnosis of the condition of the particulate filter
  2. Checking exhaust gas temperature sensors
  3. Cleaning or replacing the diesel particulate filter
  4. Checking the fuel injection system
  5. ECU software update

Related codes

Error P24A1 by Vehicle Brand