OBD Guide

P24B6

Particulate Matter Sensor Heater Control Circuit High

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–189 (est.)

Symptoms

  • Check Engine Light Is On
  • Reduced engine power
  • Deteriorating fuel economy
  • Incorrect operation of the emission control system

Causes

  • Open or short circuit in the sensor heater circuit
  • Soot particle sensor malfunction
  • Problems with the wiring harness or connectors
  • Engine control module malfunction
  • Corroded contacts or damaged wiring

How to Fix

  1. Check the continuity of the sensor heater circuit
  2. Check the resistance of the heating element
  3. Inspect connectors and wiring for damage
  4. If necessary, replace the soot particle sensor
  5. Check the voltage supply from the ECU

Related codes

Error P24B6 by Vehicle Brand