AutoCodes – Chevrolet – P244A Chevrolet

P244A Chevrolet Code - Diesel Particulate Filter Low Differential Pressure

Quick Answer

The exhaust differential pressure sensor measures the pressure difference across the inlet and outlet of the diesel particulate filter. Common causes include Faulty Diesel Particulate Filter (DPF), Faulty Diesel Particulate Filter Exhaust Differential Pressure Sensor, Diesel Particulate Filter Exhaust Differential Pressure Sensor harness is open or shorted. 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: P244A Chevrolet indicates Diesel Particulate Filter Low Differential Pressure.
Common causes: Common causes include Faulty Diesel Particulate Filter (DPF), Faulty Diesel Particulate Filter Exhaust Differential Pressure Sensor, Diesel Particulate Filter Exhaust Differential Pressure Sensor harness is open or shorted.
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 1,852

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 28, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P244A Chevrolet Description

The exhaust differential pressure sensor measures the pressure difference across the inlet and outlet of the diesel particulate filter. The pressure difference across the diesel particulate filter increases as captured particulates in the diesel particulate filter increase. The Engine Control Module (ECM) supplies a 5 V reference circuit and a ground on the low reference circuit. The exhaust differential pressure sensor provides a signal voltage to the ECM, relative to the backpressure as a function of exhaust flow, diesel particulate filter temperature, and diesel particulate filter soot loading. The ECM converts the signal voltage input to a pressure value. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the diesel particulate filter exhaust differential pressure sensor is lower than the minimum threshold.

OBDII Code P244A Chevrolet - Diesel Particulate Filter Low Differential Pressure - AutoCodes.com — P244A Chevrolet Code - Diesel Particulate Filter Low Differential Pressure

What does this mean?

What are the Possible Causes of the DTC P244A Chevrolet?

Faulty Diesel Particulate Filter (DPF)
Faulty Diesel Particulate Filter Exhaust Differential Pressure Sensor
Diesel Particulate Filter Exhaust Differential Pressure Sensor harness is open or shorted
Diesel Particulate Filter Exhaust Differential Pressure Sensor circuit poor electrical connection

How to Fix the DTC P244A 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 P244A 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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Get the P244A 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 P244A Chevrolet Code

1. What are the common symptoms of OBDII code P244A (Chevrolet) - Diesel Particulate Filter Low Differential Pressure?

- The common symptoms include reduced engine power, increased fuel consumption, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P244A (Chevrolet) - Diesel Particulate Filter Low Differential Pressure?

- The code P244A can be caused by issues such as a malfunctioning diesel particulate filter, clogged filter, faulty differential pressure sensor, or a problem with the exhaust system.

3. How can I diagnose OBDII code P244A (Chevrolet) - Diesel Particulate Filter Low Differential Pressure?

- Diagnosis typically involves using an OBDII scanner to read the code, checking the differential pressure sensor readings, inspecting the diesel particulate filter for clogs, and examining the exhaust system for leaks or damage.

4. What are the possible repair options for OBDII code P244A (Chevrolet) - Diesel Particulate Filter Low Differential Pressure?

- Repair options may include cleaning or replacing the diesel particulate filter, replacing the differential pressure sensor, addressing any exhaust system issues, and resetting the code with an OBDII scanner.

5. Can I continue driving with OBDII code P244A (Chevrolet) - Diesel Particulate Filter Low Differential Pressure?

- It is not recommended to continue driving with this code active, as it can lead to further damage and potential engine issues. It is advisable to address the problem promptly.

6. How much does it typically cost to repair OBDII code P244A (Chevrolet) - Diesel Particulate Filter Low Differential Pressure?

- 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. Is OBDII code P244A (Chevrolet) - Diesel Particulate Filter Low Differential Pressure a common issue in Chevrolet vehicles?

- Yes, this code is relatively common in Chevrolet vehicles equipped with diesel engines, particularly in models with diesel particulate filters.

8. What maintenance practices can help prevent OBDII code P244A (Chevrolet) - Diesel Particulate Filter Low Differential Pressure?

- Regularly scheduled maintenance, including proper vehicle operation and following the manufacturer's recommended service intervals for the diesel particulate filter, can help prevent issues leading to this code.

9. Can a DIY enthusiast repair OBDII code P244A (Chevrolet) - Diesel Particulate Filter Low Differential Pressure?

- While some aspects of the repair may be tackled by experienced DIY enthusiasts, addressing this code often requires specialized tools and knowledge, so it is recommended to consult a professional mechanic.

10. How long does it take to repair OBDII code P244A (Chevrolet) - Diesel Particulate Filter Low Differential Pressure?

- The repair time can vary depending on the specific issue and the extent of the damage. It may take a few hours to a full day to diagnose and repair the problem associated with this code.