AutoCodesFord – P1408 2000 Ford F150

P1408 2000 Ford F150 Code - EGR Flow Out Of Self-Test Range

Quick Answer

The Exhaust Gas Recirculation (EGR) system recirculates a portion of the exhaust gasses into the intake manifold under average vehicle driving conditions to reduce combustion temperatures and exhaust gas NOx content. Common causes include Faulty Exhaust Gas Recirculation (EGR) Valve, Exhaust Gas Recirculation (EGR) Valve Vacuum hose off or defective, Plugged Exhaust Gas Recirculation (EGR) Valve. 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 2000 Ford F150 indicates EGR Flow Out Of Self-Test Range.
Common causes
Common causes include Faulty Exhaust Gas Recirculation (EGR) Valve, Exhaust Gas Recirculation (EGR) Valve Vacuum hose off or defective, Plugged Exhaust Gas Recirculation (EGR) Valve.
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.
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Code Popularity 4,142
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 30, 2022
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Code P1408 2000 Ford F150 Description

The Exhaust Gas Recirculation (EGR) system recirculates a portion of the exhaust gasses into the intake manifold under average vehicle driving conditions to reduce combustion temperatures and exhaust gas NOx content. The amount of exhaust gas recirculated varies from zero with a cold engine to a fixed rate for a hot engine with intermediate load and low engine speed.
This test is performed during the Key On Engine Running (KOER) on demand self-test only. The EGR system is commanded ON at a fixed engine speed. The test fails and the Diagnostic Trouble Code (DTC) is output when the measured EGR flow falls above or below the required calibration.
OBDII Code P1408 2000 Ford F150 - EGR Flow Out Of Self-Test Range - AutoCodes.com
P1408 2000 Ford F150 Code - EGR Flow Out Of Self-Test Range

What are the Possible Causes of the DTC P1408 2000 Ford F150?

  • Faulty Exhaust Gas Recirculation (EGR) Valve
  • Exhaust Gas Recirculation (EGR) Valve Vacuum hose off or defective
  • Plugged Exhaust Gas Recirculation (EGR) Valve

How to Fix the DTC P1408 2000 Ford F150?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1408 2000 Ford F150 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1408 2000 Ford F150 code?

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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 2000 Ford F150 Code

1. What are the common symptoms of OBDII code P1408 on a 2000 Ford F150?

Typical symptoms include rough idling, reduced engine performance, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What causes the OBDII code P1408 on a 2000 Ford F150?

The most common cause of P1408 is a malfunction in the Exhaust Gas Recirculation (EGR) system, such as a clogged EGR valve, faulty EGR sensor, or a vacuum leak.

3. How can I diagnose the EGR system to troubleshoot code P1408 on my 2000 Ford F150?

Perform a visual inspection of the EGR valve and associated components, check for vacuum leaks, test the EGR valve for proper operation, and use a scan tool to monitor EGR system data.

4. Can a clogged catalytic converter trigger code P1408 on a 2000 Ford F150?

Yes, a clogged catalytic converter can disrupt EGR flow and trigger code P1408. It is recommended to inspect the catalytic converter if other potential causes have been ruled out.

5. What are some repair tips for resolving OBDII code P1408 on a 2000 Ford F150?

Try cleaning the EGR valve and passages, replacing a faulty EGR valve or sensor, fixing any vacuum leaks, ensuring proper electrical connections, and clearing the code to see if the issue persists.

6. Is it safe to continue driving my 2000 Ford F150 with OBDII code P1408?

It is not recommended to ignore code P1408, as it can lead to poor engine performance and potential long-term damage. Addressing the issue promptly is advisable to prevent further complications.

7. Can a DIY enthusiast fix code P1408 on a 2000 Ford F150?

Depending on the underlying cause, a DIY enthusiast with automotive knowledge and tools may be able to address code P1408 by inspecting, cleaning, or replacing EGR system components.

8. How much does it typically cost to repair OBDII code P1408 on a 2000 Ford F150?

The cost of repairing code P1408 can vary depending on the cause and the extent of the issue. Repairs may range from a simple cleaning or sensor replacement to more extensive EGR system repairs.

9. Will resetting the Check Engine Light resolve code P1408 on a 2000 Ford F150?

Simply resetting the Check Engine Light without addressing the underlying issue causing code P1408 will not fix the problem. It is crucial to diagnose and repair the root cause to prevent the code from reoccurring.

10. Can extreme weather conditions affect the EGR system and trigger code P1408 on a 2000 Ford F150?

Extreme weather conditions, such as extreme cold or heat, can potentially impact the EGR system's operation and trigger code P1408. It is essential to ensure the EGR system is functioning correctly in all conditions.

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