P1408 2007 Ford Fusion 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 2007 Ford Fusion 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 2007 Ford Fusion 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 2007 Ford Fusion?
- 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 2007 Ford Fusion?
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 2007 Ford Fusion 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 2007 Ford Fusion Code
1. What does the OBDII code P1408 mean on a 2007 Ford Fusion?
P1408 indicates that the EGR (Exhaust Gas Recirculation) flow is out of the self-test range, meaning the engine control module (ECM) has detected an issue with the EGR system's performance.
2. What are the common symptoms of the P1408 code on a 2007 Ford Fusion?
Symptoms may include a lit check engine light, rough idling, decreased fuel efficiency, engine hesitation, or increased exhaust emissions.
3. What causes the P1408 code to appear on a 2007 Ford Fusion?
Common causes include a clogged or stuck EGR valve, faulty EGR sensors, damaged vacuum hoses, carbon buildup in EGR passages, or issues with the ECM.
4. Can a clogged EGR valve trigger the P1408 code?
Yes, a clogged or stuck EGR valve is one of the most common causes of the P1408 code, as it disrupts proper exhaust gas flow.
5. How do I diagnose the P1408 code on my 2007 Ford Fusion?
Start by checking for carbon buildup in the EGR valve or passages, inspecting vacuum hoses for leaks, testing the EGR valve function, and using a scan tool to monitor live data from the EGR system.
6. Can I drive my 2007 Ford Fusion with the P1408 code?
While it may be possible to drive, ignoring the code can lead to reduced engine performance, increased emissions, and potential damage to the catalytic converter over time.
7. How do I fix the P1408 code on a 2007 Ford Fusion?
Common fixes include cleaning or replacing the EGR valve, clearing blockages in the EGR passages, repairing vacuum leaks, and replacing faulty EGR sensors if necessary.
8. Will clearing the P1408 code with a scan tool solve the problem?
Clearing the code will reset the check engine light, but it won’t fix the underlying issue. The problem must be diagnosed and repaired to prevent the code from returning.
9. Can a faulty ECM cause the P1408 code on a 2007 Ford Fusion?
While rare, a malfunctioning ECM can cause the P1408 code. However, it's more likely caused by issues with the EGR system itself.
10. What tools are needed to address the P1408 code on a 2007 Ford Fusion?
You may need a scan tool, a vacuum pump, basic hand tools, and possibly cleaning supplies (e.g., carb cleaner) to address the EGR system issues.
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