OBD Guide

P24B5

Particulate Matter Sensor Heater Control Circuit Low

P24B5 is an OBD-II diagnostic trouble code meaning: Particulate Matter Sensor Heater Control Circuit Low. Common causes: open or short circuit in the sensor heating circuit, particulate sensor malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine Light Is On
  • Reduced engine power
  • Increased fuel consumption
  • Problems with diesel particulate filter regeneration
  • Incorrect soot particle sensor readings

Causes

  • Open or short circuit in the sensor heating circuit
  • Particulate sensor malfunction
  • Problems with the wiring harness or connectors
  • Engine control module (ECU) malfunction
  • Corroded contacts or damaged wiring

How to Fix

  1. Check the integrity of the sensor heating circuit
  2. Check resistance and power supply of the sensor
  3. Inspect the wiring harness and connectors for damage.
  4. If necessary, replace the soot sensor
  5. Check and, if necessary, update ECU software

Related codes

Error P24B5 by Vehicle Brand

FAQ

What does the P24B5 code mean?

P24B5 is an OBD-II diagnostic trouble code that indicates: Particulate Matter Sensor Heater Control Circuit Low

What causes a P24B5 error code?

The most common causes of P24B5 include: Open or short circuit in the sensor heating circuit; Particulate sensor malfunction; Problems with the wiring harness or connectors; Engine control module (ECU) malfunction.

How do I fix a P24B5 diagnostic trouble code?

To fix P24B5: Check the integrity of the sensor heating circuit. Check resistance and power supply of the sensor. Inspect the wiring harness and connectors for damage.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P24B5?

Yes, but get it checked soon

How much does it cost to fix P24B5?

The estimated repair cost for P24B5 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat