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P244D OBD2: Exhaust Temperature Too High For Particulate Filter Regeneration

P244D OBD2: Exhaust Temperature Too High For Particulate Filter Regeneration

The P244D code is a diagnostic trouble code (DTC) related to the exhaust system of diesel vehicles, indicating that the exhaust temperature is too high for the diesel particulate filter (DPF) regeneration process to occur effectively.

What Does the P244D Code Mean?

The P244D code signifies that the vehicle’s onboard computer has detected that the temperature of the exhaust system is beyond acceptable limits for the DPF to regenerate. This process is essential for reducing harmful emissions by burning off soot and particulates collected in the DPF.

What Causes the P244D Code?

Several issues can trigger the P244D code, including:

  • DEF (Diesel Exhaust Fluid) injector failure, which can prevent the necessary fluid from being injected into the exhaust stream to assist in raising the temperature for regeneration.
  • Exhaust Gas Temperature (EGT) sensor failure, leading to incorrect readings of exhaust temperatures.
  • Restricted diesel particulate filter, which can hinder the exhaust flow and cause overheating.

What Are the Symptoms of the P244D Code?

Common symptoms associated with the P244D code include:

  • Decreased engine performance, which may manifest as reduced power and acceleration.
  • Illuminated check engine light on the dashboard.
  • Possible smoke emissions from the exhaust.

How Serious Is the P244D Code?

The P244D code is classified as urgent and signals a significant malfunction. Ignoring this code can lead to severe engine damage and negatively affect vehicle performance. Immediate attention is recommended to avoid costly repairs down the line.

How to Diagnose the P244D Code

Diagnosing the P244D code typically involves the following steps:

  1. Use an OBD-II scanner to confirm the P244D trouble code and check for any additional codes.
  2. Inspect the DEF system and injector for any signs of failure or blockage.
  3. Check the EGT sensor for proper operation and accuracy.
  4. Examine the DPF for restrictions or damage that could impede proper function.

Common Repairs for the P244D Code

Repairs for the P244D code may include:

  • Replacing a faulty DEF injector.
  • Replacing or repairing the EGT sensor.
  • Cleaning or replacing a restricted diesel particulate filter.

How Much Does It Cost to Fix the P244D Code?

The cost to repair the P244D code can vary widely depending on the specific issue and labor rates. Generally, you might expect to pay between $200 and $1,500, depending on whether it involves replacing sensors, cleaning the DPF, or other components.

Can I Fix the P244D Code Myself?

While some DIY enthusiasts may be able to address minor issues such as checking for blockages or replacing simple components, diagnosing and repairing the P244D code often requires specialized knowledge and tools. If you’re not experienced with automotive repairs, it’s advisable to consult a professional mechanic to ensure accurate diagnosis and repair.

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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