AutoCodes – Generic – P246D

P246D 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 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 12,688

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

What does this mean?

What are the Possible Causes of the DTC P246D?

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?

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 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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Information for Specific Makes

P246D Chevrolet — Diesel Particulate Filter Pressure Sensor 'A'/'B' Correlation
P246D Dodge — Diesel Particulate Filter Pressure Sensor 'A'/'B' Correlation
P246D Ford — Diesel Particulate Filter Pressure Sensor 'A'/'B' Correlation
P246D GMC — Diesel Particulate Filter Pressure Sensor 'A'/'B' Correlation

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.