P1408 2001 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 2001 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 2001 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 2001 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 2001 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 2001 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 2001 Ford F150 Code
1. What are the common symptoms of OBDII code P1408 on a 2001 Ford F150?
The common symptoms of code P1408 include rough idling, engine hesitation, decreased fuel efficiency, and potential stalling.
2. What does the OBDII code P1408 on a 2001 Ford F150 mean?
Code P1408 indicates that the EGR (Exhaust Gas Recirculation) flow is out of the self-test range, meaning there may be an issue with the EGR system.
3. What are the possible causes of OBDII code P1408 on a 2001 Ford F150?
Possible causes of code P1408 include a faulty EGR valve, clogged EGR passages, a malfunctioning DPFE sensor, or a vacuum leak in the EGR system.
4. How can I diagnose the OBDII code P1408 on my 2001 Ford F150?
Diagnosing code P1408 involves checking the EGR valve for proper operation, inspecting EGR passages for blockages, testing the DPFE sensor, and inspecting vacuum lines for leaks.
5. Can I still drive my 2001 Ford F150 with OBDII code P1408?
While it may be possible to drive with code P1408, it is not recommended as it can lead to further damage and reduced engine performance. It's best to address the issue promptly.
6. How do I repair OBDII code P1408 on a 2001 Ford F150?
Repairing code P1408 may involve cleaning or replacing the EGR valve, clearing any blockages in the EGR passages, replacing the DPFE sensor if faulty, and fixing any vacuum leaks.
7. Will resetting the OBDII code P1408 on my 2001 Ford F150 make it go away permanently?
Simply resetting the code may temporarily turn off the check engine light, but if the underlying issue causing code P1408 is not fixed, the code is likely to reappear.
8. Can a dirty air filter trigger OBDII code P1408 on a 2001 Ford F150?
While a dirty air filter itself may not directly cause code P1408, a restricted air filter can affect engine performance and potentially lead to issues with the EGR system.
9. Is it possible for a loose gas cap to trigger OBDII code P1408 on a 2001 Ford F150?
A loose gas cap is typically associated with evaporative emission codes and is unlikely to directly trigger code P1408 related to EGR system flow.
10. How can I prevent OBDII code P1408 from appearing on my 2001 Ford F150 in the future?
To prevent code P1408, it's essential to perform regular maintenance on the EGR system, including cleaning the EGR valve, checking for blockages, and ensuring proper sensor operation.
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