P24B6 — Particulate Matter Sensor Heater Control Circuit High

What Does P24B6 Mean?

P24B6 is a diagnostic trouble code indicating: Particulate Matter Sensor Heater Control Circuit High. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P24B6

⚠️ Check Engine Light (MIL) illuminated
⚠️ Particulate Matter Sensor Heater reading stuck at maximum value
⚠️ Related system operating erratically or in default mode
⚠️ Reduced engine performance

Common Causes

🔍 Short to voltage in Particulate Matter Sensor Heater wiring harness
🔍 Corroded or water-damaged Particulate Matter Sensor Heater connector
🔍 Faulty Particulate Matter Sensor Heater outputting maximum voltage
🔍 Damaged wiring rubbing against metal components
🔍 ECM/PCM internal fault (rare)

Frequently Asked Questions

What does P24B6 mean?

P24B6 indicates: Particulate Matter Sensor Heater Control Circuit High. The vehicle's computer has detected that the Particulate Matter Sensor Heater is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P24B6?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P24B6 for extended periods may cause additional problems.

How much does it cost to fix P24B6?

Repair costs for P24B6 typically range from $20 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect and repair Particulate Matter Sensor Heater wiring for short to voltage
🔧 Clean or replace corroded Particulate Matter Sensor Heater connector
🔧 Replace faulty Particulate Matter Sensor Heater

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P24B6: Particulate Matter Sensor Heater Control Circuit High