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Engine-Codes – GMC – P24B6 GMC

P24B6 GMC Code - Particulate Matter Sensor Heater Control Circuit High Voltage

Quick Answer

The P24B6 diagnostic trouble code (DTC) for GMC vehicles indicates a problem with the Particulate Matter Sensor Heater Control Circuit High Voltage. Common causes include Faulty particulate matter sensor, Damaged wiring or connectors, Issues with the engine control module (ECM). Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P24B6 GMC indicates Particulate Matter Sensor Heater Control Circuit High Voltage.
Common causes
Common causes include Faulty particulate matter sensor, Damaged wiring or connectors, Issues with the engine control module (ECM).
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P24B6 GMC Description

The P24B6 diagnostic trouble code (DTC) for GMC vehicles indicates a problem with the Particulate Matter Sensor Heater Control Circuit High Voltage. This sensor plays a crucial role in monitoring the level of particulate matter in the exhaust gases emitted by the vehicle. Particulate matter refers to tiny particles of soot and other pollutants that can be harmful to both human health and the environment.

OBDII Code P24B6 GMC - Particulate Matter Sensor Heater Control Circuit High Voltage
P24B6 GMC Code - Particulate Matter Sensor Heater Control Circuit High Voltage

Common Causes of P24B6 GMC

  1. Faulty particulate matter sensor
  2. Damaged wiring or connectors
  3. Issues with the engine control module (ECM)
  4. Exhaust system leaks or damage
  5. Environmental factors such as extreme temperatures or contaminants

Symptoms of P24B6 GMC

  1. Check engine light illuminated
  2. Reduced fuel efficiency
  3. Decreased engine performance
  4. Failed emissions test
  5. Rough idling or engine misfires

How to Fix P24B6 GMC

  1. Use a diagnostic scan tool to retrieve the trouble code and pinpoint the exact cause of the issue.
  2. Inspect the particulate matter sensor, wiring, and connectors for any damage or corrosion.
  3. Test the sensor's heating element to determine if it is functioning properly.
  4. Replace the faulty sensor, repair any damaged wiring or connectors, or reprogram the ECM as needed.
  5. Clear the trouble code from the vehicle's memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P24B6 GMC

The cost of repairing a Particulate Matter Sensor Heater Control Circuit High Voltage issue can vary depending on the specific cause of the problem and the labor rates in your area. In general, the cost of parts for this repair can range from $100 to $300, while labor costs can add an additional $100 to $300. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to get a few quotes from different service providers to ensure you're getting a fair price.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P24B6 GMC Code

1. What are common symptoms of OBDII code P24B6 GMC?

The common symptoms of OBDII code P24B6 GMC, Particulate Matter Sensor Heater Control Circuit High Voltage, may include poor engine performance, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What causes OBDII code P24B6 GMC to trigger?

OBDII code P24B6 GMC is triggered when the particulate matter sensor heater control circuit detects a high voltage condition. This can be caused by a faulty sensor, damaged wiring, or a problem with the sensor heater control module.

3. How serious is OBDII code P24B6 GMC?

While OBDII code P24B6 GMC may not cause immediate drivability issues, it is important to address it promptly to prevent potential damage to the particulate matter sensor and ensure optimal engine performance and emissions control.

4. How can I diagnose OBDII code P24B6 GMC?

Diagnosing OBDII code P24B6 GMC typically involves using a diagnostic scanner to retrieve the fault code, conducting a visual inspection of the sensor and its wiring, and performing tests on the sensor heater control circuit to identify the root cause of the high voltage condition.

5. Can I drive with OBDII code P24B6 GMC?

It is generally not recommended to drive with OBDII code P24B6 GMC present, as it can lead to poor engine performance and potential damage to emissions control components. It is best to address the issue as soon as possible.

6. How can OBDII code P24B6 GMC be repaired?

Repairing OBDII code P24B6 GMC may involve replacing the particulate matter sensor, repairing or replacing damaged wiring, or addressing issues with the sensor heater control module. It is recommended to follow manufacturer-specific repair procedures.

7. Are there any DIY tips for fixing OBDII code P24B6 GMC?

While some DIY enthusiasts may attempt to diagnose and fix OBDII code P24B6 GMC themselves, it is recommended to have a professional mechanic perform the repairs due to the complexity of the emissions control system and the need for specialized tools and knowledge.

8. How much does it cost to repair OBDII code P24B6 GMC?

The cost of repairing OBDII code P24B6 GMC can vary depending on the root cause of the issue, the labor rates in your area, and whether any parts need to be replaced. It is advisable to obtain quotes from local repair shops for an accurate estimate.

9. Can a faulty particulate matter sensor cause OBDII code P24B6 GMC?

Yes, a faulty particulate matter sensor can cause OBDII code P24B6 GMC to trigger, especially if the sensor is not functioning properly or the heater control circuit is detecting high voltage.

10. How can I prevent OBDII code P24B6 GMC from recurring?

To prevent OBDII code P24B6 GMC from recurring, it is essential to address any underlying issues promptly, perform regular maintenance on your vehicle, and follow the manufacturer's recommended service intervals for emissions system components.

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