Engine-CodesFord – P2459 Ford

P2459 Ford Code - Diesel Particulate Filter Regeneration Frequency

Quick Answer

The P2459 Ford code refers to a Diesel Particulate Filter Regeneration Frequency issue. Common causes include Clogged DPF filter, Faulty DPF regeneration system components, Incorrect engine oil type or level. 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
P2459 Ford indicates Diesel Particulate Filter Regeneration Frequency.
Common causes
Common causes include Clogged DPF filter, Faulty DPF regeneration system components, Incorrect engine oil type or level.
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.
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P2459 Ford Description

The P2459 Ford code refers to a Diesel Particulate Filter Regeneration Frequency issue. In diesel vehicles, the Diesel Particulate Filter (DPF) is responsible for capturing and storing soot particles created during the combustion process. Over time, these particles accumulate in the filter, reducing its effectiveness and potentially causing blockages. To prevent this, the vehicle's engine control module (ECM) initiates a regeneration process to burn off the trapped particles and clean the filter.

OBDII Code P2459 Ford - Diesel Particulate Filter Regeneration Frequency
P2459 Ford Code - Diesel Particulate Filter Regeneration Frequency

Common Causes of P2459 Ford

  1. Clogged DPF filter
  2. Faulty DPF regeneration system components
  3. Incorrect engine oil type or level
  4. Driving patterns that do not allow for proper DPF regeneration
  5. Sensor malfunctions

Symptoms of P2459 Ford

  1. Decreased engine performance
  2. Reduced fuel efficiency
  3. Increased exhaust smoke
  4. Illuminated check engine light

How to Fix P2459 Ford

  1. Perform a diagnostic scan to confirm the P2459 code and identify any other related issues.
  2. Inspect and clean the DPF filter to remove any accumulated soot particles.
  3. Check and replace any faulty DPF regeneration system components, such as sensors or valves.
  4. Ensure that the engine oil is the correct type and at the proper level.
  5. Test drive the vehicle to verify that the DPF regeneration process is functioning correctly.

Cost to Fix P2459 Ford

The cost of repairing a P2459 Ford code can vary depending on the specific underlying issue and the labor rates at the auto repair shop. On average, the repair costs for addressing a DPF regeneration frequency issue can range from $200 to $800. This estimate includes the cost of parts such as sensors or valves, as well as labor costs for diagnosis and repair. It's important to note that the actual cost may be higher or lower based on the severity of the problem and any additional repairs that may be needed. It is recommended to consult with a trusted mechanic or dealership for a more accurate estimate based on your vehicle's make and model.

When is the Code Detected?

The P2459 will set if the Engine Control Module (ECM) detects that the average time between completed regenerations is less than a calibrated threshold.

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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.

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