AutoCodes – GMC – P2463 GMC

P2463 GMC Code - Diesel Particulate Filter Soot Accumulation

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 Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P2463 GMC indicates Diesel Particulate Filter Soot Accumulation.
Common causes: Common causes include Faulty Diesel Particulate Filter (DPF).
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 15,506

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

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

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code P2463 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. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the Diesel Particulate Filter is clogged and needs service regeneration.

OBDII Code P2463 GMC - Diesel Particulate Filter Soot Accumulation - AutoCodes.com — P2463 GMC Code - Diesel Particulate Filter Soot Accumulation

What does this mean?

What are the Possible Causes of the DTC P2463 GMC?

Faulty Diesel Particulate Filter (DPF)

How to Fix the DTC P2463 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 does this mean?

Code Tech Notes

To resolve this, you will have to change the Diesel Particulate Filter and reset the code with an OBDII scanner.

There is a Factory Service Bulletin for the following GMC models:
2007-2009 GMC TopKick
2007-2018 GMC Sierra
2007-2020 GMC Savana
2016-2020 GMC Canyon
2018-2019 GMC Terrain
2019 GMC Sierra Limited, Sierra 1500 (New Model)
2019 GMC Sierra 2500/3500
2020 GMC Sierra 1500
2020 GMC Sierra 2500HD/3500HD
GMC Factory Service Bulletin OBDII Code P2463

The Diesel Particulate Filter (DPF) will clean itself as part of normal operation. Several factors including fuel consumed, hours of engine operation, and miles are driven are monitored by the Engine Control Module (ECM). The self-cleaning occurs approximately once per tank of fuel. Under certain driving conditions, such as extended idling, stop-and-go traffic, etc., the DPF cannot clean itself.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2463 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.

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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.