P1406 2009 Ford Fusion Code - DPFE Sensor Circuit Downstream Hose
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 Downstream hose is disconnected, Downstream hose is plugged (ice), Plugged or damaged Exhaust Gas Recirculation (EGR) tube. 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
- P1406 2009 Ford Fusion indicates DPFE Sensor Circuit Downstream Hose.
- Common causes
- Common causes include Downstream hose is disconnected, Downstream hose is plugged (ice), Plugged or damaged Exhaust Gas Recirculation (EGR) tube.
- 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 P1406 2009 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 continues to indicate EGR flow even after the EGR valve is commanded closed.
What are the Possible Causes of the DTC P1406 2009 Ford Fusion?
- Downstream hose is disconnected
- Downstream hose is plugged (ice)
- Plugged or damaged Exhaust Gas Recirculation (EGR) tube
- Faulty Differential Pressure Feedback Electronic (DPFE) sensor
- 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 P1406 2009 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 P1406 2009 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 P1406 2009 Ford Fusion Code
What does the OBDII code P1406 mean on a 2009 Ford Fusion?
P1406 indicates an issue with the DPFE (Differential Pressure Feedback EGR) sensor, specifically related to the downstream hose, which can affect the EGR system's performance.
What are the common symptoms of code P1406 in a 2009 Ford Fusion?
Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, increased emissions, and an illuminated check engine light.
What causes the P1406 code to appear in a 2009 Ford Fusion?
The primary causes include a clogged or damaged downstream hose, a faulty DPFE sensor, carbon buildup in the EGR system, or damaged wiring and connections.
Can I drive my 2009 Ford Fusion with a P1406 code?
While the car may still be drivable, it is not recommended to ignore the issue, as it can lead to reduced performance, poor fuel economy, and potential damage to other engine components.
How can I fix the P1406 code on my 2009 Ford Fusion?
Repairs may involve inspecting and replacing the downstream hose, cleaning or replacing the DPFE sensor, clearing carbon deposits in the EGR system, and checking for damaged wiring.
How do I diagnose the P1406 code on a 2009 Ford Fusion?
Diagnosis typically involves using a scan tool to confirm the code, visually inspecting the DPFE sensor and its hoses, testing the sensor’s voltage output, and checking for clogs or leaks in the EGR system.
What tools are needed to fix the P1406 code on a 2009 Ford Fusion?
You may need a scan tool, multimeter, replacement hoses or DPFE sensor, basic hand tools, and potentially a carbon cleaner for the EGR system.
How much does it typically cost to fix a P1406 code on a 2009 Ford Fusion?
Repair costs can range from $50 to $200, depending on whether you only need to replace a hose or the DPFE sensor, or if professional diagnostics are required.
Can a dirty EGR system trigger the P1406 code in a 2009 Ford Fusion?
Yes, carbon buildup or blockages in the EGR system can lead to incorrect readings from the DPFE sensor, causing the P1406 code.
Will clearing the P1406 code with a scan tool fix the problem?
Clearing the code will turn off the check engine light temporarily, but it won’t resolve the underlying issue, and the code is likely to return.
Discuss the causes and fixes for P1406 2009 Ford Fusion OBDII Code
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