P1405 2008 Ford Fusion Code - Differential Pressure Feedback Sensor Upstream Hose Off or Plugged
Quick Answer
The purpose of the Exhaust Gas Recirculation (EGR) system on your engine is to limit oxides of nitrogen (NOx) emissions. Common causes include Faulty Differential Pressure Feedback Electronic (DPFE) sensor (EGR pressure sensor), Plugged or damaged EGR tube, Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted. 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
- P1405 2008 Ford Fusion indicates Differential Pressure Feedback Sensor Upstream Hose Off or Plugged.
- Common causes
- Common causes include Faulty Differential Pressure Feedback Electronic (DPFE) sensor (EGR pressure sensor), Plugged or damaged EGR tube, Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted.
- 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 P1405 2008 Ford Fusion Description
While driving, the exhaust gas recirculation (EGR) monitor commands the EGR valve closed and checks the differential pressure across the EGR orifice. The test fails when the signal from the differential pressure feedback EGR sensor indicates EGR flow is in the negative direction.
What are the Possible Causes of the DTC P1405 2008 Ford Fusion?
- Faulty Differential Pressure Feedback Electronic (DPFE) sensor (EGR pressure sensor)
- Plugged or damaged EGR tube
- Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted
- Differential Pressure Feedback Electronic (DPFE) sensor circuit poor electrical connection
How to Fix the DTC P1405 2008 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 P1405 2008 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 P1405 2008 Ford Fusion Code
1. What does the OBDII code P1405 mean on a 2008 Ford Fusion?
P1405 indicates an issue with the Differential Pressure Feedback EGR (DPFE) sensor, specifically that the upstream hose is off or plugged.
2. What are the symptoms of code P1405 on a 2008 Ford Fusion?
Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and the Check Engine Light appearing.
3. What causes code P1405 to trigger on a 2008 Ford Fusion?
The code is typically caused by a disconnected or clogged DPFE sensor hose, a faulty DPFE sensor, or carbon buildup in the EGR system.
4. How do I fix the P1405 code on my 2008 Ford Fusion?
Inspect and reconnect or clean the DPFE sensor hoses, clean the EGR passages, and replace the DPFE sensor if it's faulty.
5. Can I drive my 2008 Ford Fusion with the P1405 code?
While the car may still be drivable, prolonged operation with this code can lead to reduced performance and potential engine damage due to improper EGR system functioning.
6. How do I locate the DPFE sensor on a 2008 Ford Fusion?
The DPFE sensor is usually mounted near the EGR valve, with two small hoses connecting it to the exhaust system.
7. What tools are needed to diagnose and repair code P1405 on a 2008 Ford Fusion?
You may need a basic socket set, vacuum hose cleaner, a scan tool, and possibly a replacement DPFE sensor.
8. How much does it cost to fix the P1405 code on a 2008 Ford Fusion?
Repair costs can vary but typically range from $50 to $200, depending on whether you need to replace the DPFE sensor or clean the EGR system.
9. Can a dirty EGR valve cause code P1405 on a 2008 Ford Fusion?
Yes, carbon buildup in the EGR valve or passages can contribute to this code by restricting proper airflow and causing pressure sensor issues.
10. How can I prevent code P1405 from reoccurring on my 2008 Ford Fusion?
Regular maintenance such as cleaning the EGR system, inspecting hoses, and ensuring proper sensor functionality can help prevent this code.
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