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P249E Ford Code - Closed Loop Reductant Injection Control At Limit - Flow Too High

Quick Answer

The P249E diagnostic trouble code for Ford vehicles indicates that the closed-loop reductant injection control system is operating at its upper limit, with the flow rate being too high. Common causes include Faulty reductant injector, Clogged reductant injector or lines, Electrical issues with the reductant injection system. 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
P249E Ford indicates Closed Loop Reductant Injection Control At Limit - Flow Too High.
Common causes
Common causes include Faulty reductant injector, Clogged reductant injector or lines, Electrical issues with the reductant injection system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P249E Ford Description

The P249E diagnostic trouble code for Ford vehicles indicates that the closed-loop reductant injection control system is operating at its upper limit, with the flow rate being too high. This code is related to the vehicle's emissions control system, specifically the reductant injection system that helps reduce harmful emissions from the exhaust gases. The reductant injection system injects a urea-based solution, commonly known as diesel exhaust fluid (DEF), into the exhaust stream to convert harmful nitrogen oxides (NOx) into harmless nitrogen gas and water vapor.

OBDII Code P249E Ford - Closed Loop Reductant Injection Control At Limit - Flow Too High
P249E Ford Code - Closed Loop Reductant Injection Control At Limit - Flow Too High

Common Causes of P249E Ford

  1. Faulty reductant injector
  2. Clogged reductant injector or lines
  3. Electrical issues with the reductant injection system
  4. Software issues or calibration errors
  5. Exhaust system leaks or damage

Symptoms of P249E Ford

  1. Check engine light illuminated
  2. Reduced fuel efficiency
  3. Increased exhaust emissions
  4. Rough idling or poor engine performance

How to Fix P249E Ford

  1. Diagnose the specific cause of the high flow rate issue using a scan tool to monitor reductant injector performance.
  2. Inspect and test the reductant injector and associated components for proper operation and flow rate.
  3. Clean or replace any clogged reductant injector or lines.
  4. Check and repair any electrical connections or wiring issues related to the reductant injection system.
  5. Update software or recalibrate the reductant injection system as needed.

Cost to Fix P249E Ford

The typical repair costs for addressing a P249E code on a Ford vehicle can range from $200 to $600, depending on the specific cause of the issue and the parts and labor required for the repair. This estimate includes the cost of diagnostic time, replacement parts, and labor charges. Keep in mind that labor rates can vary between different auto repair shops, so it's advisable to obtain quotes from multiple sources to ensure a competitive price.

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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 P249E Ford Code

1. What are the common symptoms of OBDII code P249E in a Ford vehicle?

- Common symptoms include the check engine light being illuminated, reduced engine performance, and potential exhaust system issues.

2. What can cause the OBDII code P249E to trigger in a Ford vehicle?

- This code is typically triggered by a malfunction in the closed-loop reductant injection control system, often due to a high flow rate of the reductant being detected.

3. How serious is the OBDII code P249E in a Ford vehicle?

- While the vehicle may still be driveable with this code, it can lead to increased emissions, reduced fuel efficiency, and potential damage to the exhaust system if left unresolved.

4. What are some possible repair tips for addressing OBDII code P249E in a Ford vehicle?

- Repair tips may include checking the reductant injection system for leaks or blockages, inspecting the reductant injector for proper operation, and verifying the integrity of related sensors.

5. Can I continue to drive my Ford vehicle with the OBDII code P249E present?

- It is generally not recommended to continue driving the vehicle with this code active, as it can lead to increased emissions and potential long-term damage to the engine or exhaust system.

6. How can I reset the OBDII code P249E in a Ford vehicle?

- The code can be reset using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes. However, it is important to address the underlying issue causing the code to prevent it from reoccurring.

7. Is it possible to prevent the OBDII code P249E from appearing in my Ford vehicle?

- Regular maintenance of the reductant injection system, including ensuring proper fluid levels and addressing any leaks promptly, can help prevent this code from triggering.

8. Can a DIY enthusiast address the OBDII code P249E in a Ford vehicle?

- Depending on the specific issue causing the code, some DIY enthusiasts may be able to address it themselves by following repair guides or seeking assistance from automotive forums.

9. How long does it typically take to repair the OBDII code P249E in a Ford vehicle?

- The repair time can vary depending on the exact cause of the code and the availability of parts. It is recommended to consult a professional mechanic for a more accurate estimate.

10. Will the OBDII code P249E in a Ford vehicle affect its overall performance?

- Yes, this code can impact the vehicle's performance by potentially reducing engine power, increasing emissions, and causing other related issues if not addressed promptly.

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