P1406 2006 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 2006 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 2006 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 2006 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 2006 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 2006 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 2006 Ford Fusion Code
1. What does the OBDII code P1406 mean on a 2006 Ford Fusion?
P1406 indicates an issue with the DPFE (Delta Pressure Feedback EGR) Sensor Circuit, specifically related to the downstream hose.
2. What are the common symptoms of a P1406 code?
Symptoms may include rough idling, reduced engine performance, poor fuel economy, and the check engine light turning on.
3. What causes the P1406 code to trigger on a Ford Fusion?
Common causes include a clogged or damaged EGR hose, a faulty DPFE sensor, electrical wiring issues, or carbon buildup in the EGR system.
4. Can I drive my 2006 Ford Fusion with a P1406 code?
While it may be possible to drive, it is not recommended as it can lead to reduced performance, higher emissions, and potential damage to the EGR system.
5. How do I diagnose a P1406 code?
Start by visually inspecting the DPFE sensor, downstream hose, and electrical connectors for damage or blockages. Use a multimeter to check sensor voltage and scan for additional codes.
6. How do I fix the P1406 code on a 2006 Ford Fusion?
Repairs may include replacing the DPFE sensor, cleaning or replacing the EGR hoses, clearing carbon buildup in the EGR system, or repairing damaged wiring.
7. What tools are needed to fix a P1406 code?
You may need a multimeter, a vacuum gauge, basic hand tools, and possibly a diagnostic scanner to clear the code after repairs.
8. How much does it cost to repair a P1406 code?
Repair costs can vary, but replacing a DPFE sensor typically ranges from $100 to $250, including parts and labor.
9. Can a dirty EGR valve cause a P1406 code?
Yes, carbon buildup or a clogged EGR valve can restrict exhaust flow, leading to incorrect pressure readings and triggering the P1406 code.
10. How can I prevent the P1406 code from returning?
Regular maintenance, such as cleaning the EGR system and inspecting hoses and sensors, can help prevent the code from recurring.
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