P1408 2012 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 2012 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 2012 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 2012 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 2012 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 2012 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 2012 Ford Fusion Code
1. What does the OBDII code P1408 mean on a 2012 Ford Fusion?
P1408 indicates that the EGR (Exhaust Gas Recirculation) flow is out of the expected range during the self-test, suggesting an issue with the EGR system.
2. What are the common symptoms of code P1408 on a 2012 Ford Fusion?
Common symptoms include the Check Engine Light turning on, reduced fuel efficiency, rough idling, and possible engine hesitation or stalling.
3. What causes the P1408 code to appear?
Possible causes include a clogged or faulty EGR valve, carbon buildup in EGR passages, a damaged EGR sensor, or a vacuum leak in the EGR system.
4. Can a dirty EGR valve cause code P1408?
Yes, carbon buildup or debris in the EGR valve can restrict flow and trigger the P1408 code.
5. How do you diagnose code P1408 on a 2012 Ford Fusion?
Start by scanning for codes, inspecting the EGR valve for clogs or damage, checking the EGR sensor and wiring, and ensuring EGR passages are not blocked.
6. Is it safe to drive with the P1408 code?
While the car may still run, driving with this code can lead to reduced performance, higher emissions, and potential engine damage if left unresolved.
7. How can you fix the P1408 code on a 2012 Ford Fusion?
Clean or replace the EGR valve, clear any carbon buildup in the passages, inspect and repair wiring, or replace the EGR sensor if necessary.
8. Does the P1408 code affect emissions?
Yes, a malfunctioning EGR system associated with this code can increase NOx emissions and cause your vehicle to fail an emissions test.
9. How much does it cost to repair the P1408 code on a Ford Fusion?
Costs vary, but cleaning an EGR valve may cost $100–$200, while replacing it could range from $200–$500, depending on labor and parts.
10. Can a vacuum leak trigger the P1408 code?
Yes, a vacuum leak can disrupt the EGR system's operation and cause the P1408 code to appear.
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