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P244E OBD2: Exhaust Temperature Too Low For Particulate Filter Regeneration

P244E OBD2: Exhaust Temperature Too Low For Particulate Filter Regeneration

The P244E code is an OBD-II trouble code that indicates the exhaust temperature is too low for the Diesel Particulate Filter (DPF) regeneration process to occur. This is a critical code that signals potential issues in the exhaust system, particularly affecting diesel engines equipped with a particulate filter.

What Does the P244E Code Mean?

The P244E code specifically refers to a situation where the exhaust temperature is not reaching the necessary levels required for the DPF to effectively regenerate and burn off soot and other particulates. When this occurs, the system cannot convert harmful nitrogen oxides (NOx) to less harmful emissions such as nitrogen and water vapor.

What Causes the P244E Code?

Several factors can trigger the P244E code, including:

  • DEF (Diesel Exhaust Fluid) injector failure
  • Exhaust Gas Temperature (EGT) sensor failure
  • Restricted diesel particulate filter

Any of these issues can prevent the exhaust system from reaching the necessary temperatures for proper operation.

What Are the Symptoms of the P244E Code?

The primary symptom associated with the P244E code is decreased engine performance. This can manifest as:

  • Loss of power during acceleration
  • Reduced fuel efficiency
  • Increased emissions

Drivers may notice sluggishness or an inability to maintain speed, particularly under load.

How Serious Is the P244E Code?

The P244E code is classified as urgent. Delaying repairs can lead to severe damage to the vehicle’s exhaust system and can significantly affect engine performance. It is crucial to address this issue promptly to avoid further complications.

How to Diagnose the P244E Code

Diagnosing the P244E code involves a systematic approach:

  1. Use an OBD-II scanner to confirm the P244E code and check for any related codes.
  2. Inspect the DEF injector and EGT sensor for signs of damage or failure.
  3. Check the DPF for restrictions or blockages.
  4. Monitor the exhaust temperature readings to ensure they are within expected ranges.

A thorough diagnostic can help pinpoint the exact cause of the code.

Common Repairs for the P244E Code

Common repairs associated with the P244E code may include:

  • Replacing a faulty DEF injector
  • Replacing a malfunctioning EGT sensor
  • Cleaning or replacing a restricted diesel particulate filter

Each repair will depend on the specific diagnosis of the vehicle.

How Much Does It Cost to Fix the P244E Code?

The cost of fixing the P244E code can vary widely based on the underlying issue. On average, you might expect to pay anywhere from $150 to $1,500, depending on whether a sensor, injector, or filter needs replacement.

Can I Fix the P244E Code Myself?

While some DIY enthusiasts may be able to tackle repairs like replacing a sensor or cleaning the DPF, it is essential to have a solid understanding of the exhaust system and associated components. If you’re not confident in your ability to diagnose or repair the issue, it’s recommended to seek professional assistance to avoid causing further damage to your vehicle.

About JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

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