P1408 1999 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 1999 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.
Code P1408 1999 Ford F150 Description
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.
What are the Possible Causes of the DTC P1408 1999 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 1999 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1408 1999 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.
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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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