Engine-CodesFord – P1408 1999 Ford F150

P1408 1999 Ford F150 Code - EGR Flow Out Of Self-Test Range

Quick Answer

The P1408 code for a 1999 Ford F150 indicates that there is an issue with the Exhaust Gas Recirculation (EGR) system. Common causes include Malfunctioning EGR valve, Clogged EGR passages, Faulty EGR position sensor. 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
P1408 1999 Ford F150 indicates EGR Flow Out Of Self-Test Range.
Common causes
Common causes include Malfunctioning EGR valve, Clogged EGR passages, Faulty EGR position sensor.
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 12, 2024
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Code P1408 1999 Ford F150 Description

The P1408 code for a 1999 Ford F150 indicates that there is an issue with the Exhaust Gas Recirculation (EGR) system. Specifically, it means that the EGR flow is out of the self-test range, which can lead to a variety of performance issues in the vehicle. The EGR system is responsible for recirculating a portion of the engine's exhaust gas back into the intake manifold, which helps reduce emissions and lower combustion temperatures.

OBDII Code P1408 1999 Ford F150 - EGR Flow Out Of Self-Test Range
P1408 1999 Ford F150 Code - EGR Flow Out Of Self-Test Range

Common Causes of P1408 1999 Ford F150

  1. Malfunctioning EGR valve
  2. Clogged EGR passages
  3. Faulty EGR position sensor
  4. Vacuum leak in the EGR system

Symptoms of P1408 1999 Ford F150

  1. Rough idling
  2. Hesitations or stalling
  3. Decreased power
  4. Engine misfires
  5. Illumination of the check engine light

How to Fix P1408 1999 Ford F150

  1. Begin by diagnosing the specific cause of the issue using a scan tool to read the trouble codes and perform tests on the EGR system components.
  2. Inspect the EGR valve and passages for any signs of clogging or carbon buildup. Clean or replace the EGR valve if necessary.
  3. Test the EGR position sensor to ensure it is functioning correctly. Replace if faulty.
  4. Check for any vacuum leaks in the EGR system and repair or replace any damaged hoses or connections.
  5. Clear the trouble codes and perform a test drive to ensure the issue has been resolved.

Cost to Fix P1408 1999 Ford F150

The typical repair costs for addressing a P1408 code on a 1999 Ford F150 can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnosis time and labor rates can vary, so it's recommended to obtain a few quotes from different auto repair shops to get a more accurate estimate for your specific situation.

Tech Notes for P1408 1999 Ford F150

Replace an EGR Valve 1997 Ford F150









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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 P1408 1999 Ford F150 Code

1. What are the common symptoms of OBDII code P1408 in a 1999 Ford F150?

The common symptoms of code P1408 in a 1999 Ford F150 include rough idling, engine hesitation, decreased fuel efficiency, and potential stalling.

2. What does the OBDII code P1408 "EGR Flow Out Of Self-Test Range" indicate in a 1999 Ford F150?

The P1408 code for a 1999 Ford F150 indicates that the exhaust gas recirculation (EGR) system is not functioning within the expected range during self-testing.

3. What are the possible causes of OBDII code P1408 in a 1999 Ford F150?

The most common causes of code P1408 in a 1999 Ford F150 are a faulty EGR valve, clogged EGR passages, wiring issues, or a malfunctioning EGR position sensor.

4. How can I diagnose the OBDII code P1408 in my 1999 Ford F150?

Diagnosing code P1408 requires using an OBDII scanner to retrieve the code, checking the EGR valve for proper operation, inspecting EGR passages for blockages, and testing the EGR position sensor.

5. Can I continue driving my 1999 Ford F150 with OBDII code P1408?

It is not recommended to continue driving your 1999 Ford F150 with code P1408 as it can lead to poor engine performance and potential damage if left unresolved.

6. How can I repair OBDII code P1408 in my 1999 Ford F150?

To repair code P1408 in a 1999 Ford F150, you may need to replace the EGR valve, clean out any clogged EGR passages, repair any wiring issues, or replace the EGR position sensor as needed.

7. Can a DIY enthusiast fix OBDII code P1408 in a 1999 Ford F150?

Depending on your mechanical skills, you may be able to address code P1408 in a 1999 Ford F150 as some repairs, like replacing the EGR valve, can be done at home with the right tools.

8. How much does it cost to repair OBDII code P1408 in a 1999 Ford F150?

The cost of repairing code P1408 in a 1999 Ford F150 can vary based on the specific issue, but it may range from $100 to $500, including parts and labor.

9. Will resetting the OBDII code P1408 in my 1999 Ford F150 make it go away?

Resetting the OBDII code P1408 in a 1999 Ford F150 may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return after driving the vehicle.

10. How can I prevent OBDII code P1408 from appearing in my 1999 Ford F150 in the future?

To prevent the recurrence of code P1408 in your 1999 Ford F150, it's essential to perform regular maintenance on the EGR system, including cleaning the EGR valve and passages, and addressing any issues promptly.

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