AutoCodes – GMC – P24A4 GMC

P24A4 GMC Code - Diesel Particulate Filter Soot Accumulation Excessive

Quick Answer

The soot particles accumulate in the channels of the Diesel Particulate Filter (DPF) and are burned off at regular intervals, through a process called regeneration or cleaning. Common causes include Faulty Diesel Particulate Filter (DPF). 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: P24A4 GMC indicates Diesel Particulate Filter Soot Accumulation Excessive.
Common causes: Common causes include Faulty Diesel Particulate Filter (DPF).
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.

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Code Popularity 626

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 29, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P24A4 GMC Description

The soot particles accumulate in the channels of the Diesel Particulate Filter (DPF) and are burned off at regular intervals, through a process called regeneration or cleaning. The DPF cleaning process prevents the DPF from clogging. Excess soot in the filter can cause a drop in engine performance and crack the filter during regeneration.

OBDII Code P24A4 GMC - Diesel Particulate Filter Soot Accumulation Excessive - AutoCodes.com — P24A4 GMC Code - Diesel Particulate Filter Soot Accumulation Excessive

What does this mean?

What are the Possible Causes of the DTC P24A4 GMC?

Faulty Diesel Particulate Filter (DPF)

How to Fix the DTC P24A4 GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P24A4 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P24A4 GMC code?

Need more information on how to fix the P24A4 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P24A4 GMC Code

1. What are the common symptoms of OBDII code P24A4 GMC (Diesel Particulate Filter Soot Accumulation Excessive)?

The common symptoms include reduced engine performance, black smoke from the exhaust, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P24A4 GMC?

The possible causes of this code include a clogged diesel particulate filter (DPF), faulty DPF sensor, engine tuning issues, or poor-quality diesel fuel.

3. How can I diagnose the OBDII code P24A4 GMC?

Diagnosing this code involves using a professional OBDII scanner to retrieve the fault codes, checking the DPF for excessive soot accumulation, and inspecting the DPF sensor for proper operation.

4. Can I continue driving my vehicle with OBDII code P24A4 GMC?

It is not recommended to drive the vehicle with this code as it can lead to further damage to the engine and emission system components.

5. What are some repair tips for OBDII code P24A4 GMC?

Repair tips include performing a forced DPF regeneration, cleaning or replacing the DPF filter, checking and replacing the DPF sensor if necessary, and ensuring proper engine maintenance.

6. How much does it typically cost to repair OBDII code P24A4 GMC?

The cost of repair can vary depending on the specific issue causing the code, but it may range from a few hundred to a few thousand dollars, including parts and labor.

7. Can I reset the check engine light after repairing OBDII code P24A4 GMC?

Yes, the check engine light can be reset using an OBDII scanner after the repair has been completed to clear the fault code and extinguish the warning light.

8. How often should I perform maintenance on the diesel particulate filter to prevent OBDII code P24A4 GMC?

It is recommended to follow the manufacturer's maintenance schedule for the DPF, which may involve regular inspections and cleaning to prevent excessive soot accumulation.

9. Will using higher-quality diesel fuel help prevent OBDII code P24A4 GMC?

Using higher-quality diesel fuel with lower sulfur content can help reduce the likelihood of soot accumulation in the DPF and potentially prevent this code from recurring.

10. Is it possible to prevent OBDII code P24A4 GMC through regular vehicle maintenance?

Yes, regular maintenance such as timely oil changes, using quality fuel, and following the manufacturer's service recommendations can help prevent issues leading to this code.