AutoCodes – GMC – P244C GMC

P244C GMC Code - Catalyst Temperature Too Low During Regeneration

Quick Answer

The diesel exhaust aftertreatment system consists of an underhood pre-catalytic converter and an underbody catalyst converter. Common causes include Exhaust leaks, Faulty Diesel Particulate Filter (DPF), Faulty Diesel Oxidation Catalyst (DOC) converter. 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: P244C GMC indicates Catalyst Temperature Too Low During Regeneration.
Common causes: Common causes include Exhaust leaks, Faulty Diesel Particulate Filter (DPF), Faulty Diesel Oxidation Catalyst (DOC) converter.
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 5,156

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 P244C GMC Description

The diesel exhaust aftertreatment system consists of an underhood pre-catalytic converter and an underbody catalyst converter. The underbody catalyst converter also consists of the main Diesel Oxidation Catalyst and the coated Diesel Particulate Filter (DPF). One of the main purposes of the DPF is to collect particulates from the engine exhaust in order to minimize discharge of soot to the atmosphere. The soot particles accumulate in the channels of the DPF and are burned off at regular intervals through a process called regeneration. This prevents the DPF from clogging. The Engine Control Module (ECM) commands the DPF regeneration after calculating various vehicle conditions such as DPF pressure difference, exhaust gas temperature, engine oil quality, engine speed, etc. Excessive accumulation of the soot in the DPF can cause a drop in the engine performance. During regeneration, additional fuel is injected via multiple post injections in order to increase the exhaust gas temperature. During this period, the DPF temperature is raised to approximately 600°C (1112°F) and the accumulated soot is oxidized or burned off into carbon dioxide (CO2). The Diagnostic Trouble Code (DTC) will be set when the exhaust gas temperature is too low during regeneration.

OBDII Code P244C GMC - Catalyst Temperature Too Low During Regeneration - AutoCodes.com — P244C GMC Code - Catalyst Temperature Too Low During Regeneration

What does this mean?

What are the Possible Causes of the DTC P244C GMC?

Exhaust leaks
Faulty Diesel Particulate Filter (DPF)
Faulty Diesel Oxidation Catalyst (DOC) converter
Aftermarket exhaust accessories or performance modifications

How to Fix the DTC P244C 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P244C 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.

Frequently Asked Questions about P244C GMC Code

1. What are the common symptoms of OBDII code P244C GMC?

The common symptoms of code P244C include reduced engine performance, rough idle, decreased fuel efficiency, and the illumination of the check engine light.

2. What are the possible causes of code P244C GMC?

Possible causes of code P244C include a faulty catalyst temperature sensor, issues with the catalyst monitor system, wiring or connector problems, or a malfunctioning exhaust system component.

3. How can I diagnose the catalyst temperature sensor to address code P244C?

To diagnose the catalyst temperature sensor, you can use a multimeter to test its resistance and voltage readings. If the sensor is faulty, it should be replaced to resolve the P244C code.

4. Can a clogged catalytic converter trigger code P244C GMC?

Yes, a clogged or failing catalytic converter can cause insufficient heat during regeneration, triggering code P244C. It is essential to inspect and address any issues with the catalytic converter.

5. What are some repair tips for resolving OBDII code P244C?

Repair tips for resolving code P244C include checking and repairing any damaged wiring or connectors, replacing the catalyst temperature sensor if needed, and ensuring proper functioning of the exhaust system components.

6. Will driving the vehicle help clear OBDII code P244C GMC?

Driving the vehicle may not always clear code P244C. It is recommended to diagnose the underlying issue causing the code and perform the necessary repairs to reset the check engine light.

7. Can I continue driving with OBDII code P244C illuminated?

It is not recommended to continue driving with the check engine light on due to code P244C. Ignoring this code can lead to further damage to the catalytic converter and other engine components.

8. How much does it typically cost to repair OBDII code P244C GMC?

The cost to repair code P244C can vary depending on the root cause of the issue and the necessary repairs. Costs may include sensor replacement, wiring repairs, or catalytic converter replacement, so it is advisable to consult a mechanic for an accurate estimate.

9. Are there any preventative maintenance steps to avoid code P244C in the future?

Regular maintenance, such as keeping up with scheduled tune-ups, checking for exhaust system leaks, and using high-quality fuel, can help prevent issues that may trigger code P244C in the future.

10. Can a DIY enthusiast troubleshoot and repair OBDII code P244C GMC?

While some aspects of diagnosing and repairing code P244C can be tackled by a knowledgeable DIY enthusiast, it is recommended to seek professional help to ensure an accurate diagnosis and proper repair of the underlying issue.