AutoCodes – Chevrolet – P246C Chevrolet

P246C Chevrolet Code - Diesel Particulate Filter Restriction Forced Limited Power

Quick Answer

The Diesel Particulate Filter (DPF) is monitored for conditions where it may be overloaded. Common causes include Faulty Diesel Particulate Filter. 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: P246C Chevrolet indicates Diesel Particulate Filter Restriction Forced Limited Power.
Common causes: Common causes include Faulty Diesel Particulate Filter.
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 6,743

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 Jan 15, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P246C Chevrolet Description

The Diesel Particulate Filter (DPF) is monitored for conditions where it may be overloaded. The monitor compares the calculated restriction of the DPF to two thresholds. By exceeding the first threshold for a sufficient period of time, a wrench light will be illuminated. By exceeding the second threshold for a sufficient period of time, a wrench light and a MIL will be illuminated and engine output will be limited and EGR is disabled.

OBDII Code P246C Chevrolet - Diesel Particulate Filter Restriction Forced Limited Power - AutoCodes.com — P246C Chevrolet Code - Diesel Particulate Filter Restriction Forced Limited Power

What does this mean?

What are the Possible Causes of the DTC P246C Chevrolet?

Faulty Diesel Particulate Filter

How to Fix the DTC P246C Chevrolet?

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 have to change the Diesel Particulate Filter and reset the code with an OBDII scanner.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P246C Chevrolet 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 P246C Chevrolet code?

Need more information on how to fix the P246C Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P246C Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 P246C Chevrolet Code

1. What are the common symptoms of OBDII code P246C in a Chevrolet vehicle?

The common symptoms include reduced engine power, the vehicle going into a forced limited power mode, and the illumination of the check engine light.

2. What does the OBDII code P246C Chevrolet indicate?

This code indicates a Diesel Particulate Filter (DPF) restriction, resulting in the engine going into a forced limited power mode to prevent damage.

3. What are the possible causes of the P246C code in a Chevrolet diesel vehicle?

Possible causes include a clogged DPF, faulty DPF pressure sensor, exhaust leaks, sensor malfunctions, or issues with the regeneration system.

4. How can I diagnose the P246C code in my Chevrolet vehicle?

Diagnosis typically involves using an OBDII scanner to read the code, inspecting the DPF for clogs, checking sensor readings, and ensuring proper operation of the regeneration system.

5. Can I continue driving my Chevrolet with the P246C code present?

It is not recommended to drive the vehicle with the P246C code active, as it can lead to further damage and potentially costly repairs. It is advisable to address the issue promptly.

6. How can I repair the P246C code in my Chevrolet vehicle?

Repairs may involve cleaning or replacing the DPF, addressing any exhaust leaks, replacing faulty sensors, and ensuring proper regeneration system function. Professional assistance may be required for complex repairs.

7. Can I clear the P246C code myself, or is it necessary to visit a mechanic?

You can attempt to clear the code using an OBDII scanner, but it is crucial to address the underlying issue causing the code to prevent it from recurring. If the problem persists, seeking professional help is recommended.

8. How often does the DPF need to be replaced in a Chevrolet vehicle experiencing the P246C code?

The DPF typically has a long lifespan if properly maintained. Regular maintenance, such as performing DPF regeneration as recommended by the manufacturer, can help extend the DPF's longevity.

9. Are there preventive measures to avoid encountering the P246C code in a Chevrolet diesel vehicle?

Regular maintenance, including timely oil changes, using high-quality fuel, and following the manufacturer's recommended service intervals for the DPF system, can help prevent issues leading to the P246C code.

10. Is the repair for the P246C code covered under any warranty for Chevrolet vehicles?

Depending on the vehicle's warranty coverage and the specific circumstances, repairs for the P246C code may be covered. It is advisable to check with the manufacturer or your dealership to determine if you are eligible for warranty assistance.