AutoCodes – Chevrolet – P246D Chevrolet

P246D Chevrolet Code - Diesel Particulate Filter Pressure Sensor 'A'/'B' Correlation

Quick Answer

The Powertrain Control Module (PCM) monitors the rationality of the Diesel Particulate Filter (DPF) pressure sensor during idle and part load operating conditions. Common causes include Faulty Diesel Particulate Filter Pressure Sensor, Diesel Particulate Filter Pressure Sensor harness is open or shorted, Diesel Particulate Filter Pressure Sensor circuit poor electrical connection. 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: P246D Chevrolet indicates Diesel Particulate Filter Pressure Sensor 'A'/'B' Correlation.
Common causes: Common causes include Faulty Diesel Particulate Filter Pressure Sensor, Diesel Particulate Filter Pressure Sensor harness is open or shorted, Diesel Particulate Filter Pressure Sensor circuit poor electrical connection.
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 1,433

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
Cost to Diagnose
FAQs
Comments
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Code P246D Chevrolet Description

The Powertrain Control Module (PCM) monitors the rationality of the Diesel Particulate Filter (DPF) pressure sensor during idle and part load operating conditions. The test fails when the diesel particulate filter pressure sensor signal value at idle is less than 0.15 kPa (0.022 psi). The test also fails when the diesel particulate filter pressure sensor signal value at part load is less than a minimum value or greater than a maximum value. These minimum and maximum values are based on the volume of exhaust.

OBDII Code P246D Chevrolet - Diesel Particulate Filter Pressure Sensor 'A'/'B' Correlation - AutoCodes.com — P246D Chevrolet Code - Diesel Particulate Filter Pressure Sensor 'A'/'B' Correlation

What does this mean?

What are the Possible Causes of the DTC P246D Chevrolet?

Faulty Diesel Particulate Filter Pressure Sensor
Diesel Particulate Filter Pressure Sensor harness is open or shorted
Diesel Particulate Filter Pressure Sensor circuit poor electrical connection

How to Fix the DTC P246D 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P246D 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.

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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 P246D Chevrolet Code

1. What does the OBDII code P246D for Chevrolet mean?

The code P246D indicates a Diesel Particulate Filter Pressure Sensor 'A'/'B' Correlation issue in the vehicle's emission control system.

2. What are the common symptoms of a P246D code in a Chevrolet?

Common symptoms of a P246D code include reduced engine performance, decreased fuel efficiency, and the illumination of the Check Engine Light on the dashboard.

3. What can cause the P246D code to trigger in a Chevrolet?

The P246D code is typically triggered by a faulty diesel particulate filter pressure sensor, wiring issues, exhaust system leaks, or a clogged diesel particulate filter.

4. How serious is a P246D code in a Chevrolet?

A P246D code should not be ignored as it can lead to increased emissions, potential damage to the diesel particulate filter, and may affect the overall performance of the vehicle.

5. How can I diagnose a P246D code in my Chevrolet?

Diagnosing a P246D code usually involves using a diagnostic scanner to read the code, checking the diesel particulate filter pressure sensor, inspecting the wiring, and examining the exhaust system for leaks.

6. Can I drive my Chevrolet with a P246D code?

It is not recommended to drive your Chevrolet with a P246D code as it can lead to further damage to the emission control system and may cause the vehicle to go into a reduced power mode.

7. How can I repair a P246D code in my Chevrolet?

Repairing a P246D code may involve replacing the diesel particulate filter pressure sensor, repairing any wiring issues, fixing exhaust leaks, or cleaning/replacing the diesel particulate filter.

8. How much does it cost to fix a P246D code in a Chevrolet?

The cost of fixing a P246D code in a Chevrolet can vary depending on the underlying cause, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can a P246D code be prevented in a Chevrolet?

Regular maintenance of the diesel particulate filter, ensuring proper engine performance, and addressing any warning signs promptly can help prevent the occurrence of a P246D code in a Chevrolet.

10. Is it necessary to reset the OBDII system after fixing a P246D code in a Chevrolet?

Yes, it is recommended to reset the OBDII system after fixing a P246D code in a Chevrolet to clear the error code and ensure proper monitoring of the vehicle's emissions and performance.