P1406 2008 Ford Focus 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 2008 Ford Focus 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 2008 Ford Focus 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 2008 Ford Focus?
- 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 2008 Ford Focus?
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 2008 Ford Focus 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 2008 Ford Focus Code
1. What are the common symptoms of OBDII code P1406 in a 2008 Ford Focus related to the DPFE sensor circuit downstream hose?
The common symptoms include rough idling, poor engine performance, and decreased fuel efficiency.
2. What does the OBDII code P1406 on a 2008 Ford Focus indicate in relation to the DPFE sensor circuit downstream hose?
This code typically indicates an issue with the downstream hose of the DPFE (differential pressure feedback EGR) sensor circuit.
3. What are some possible causes of OBDII code P1406 appearing on a 2008 Ford Focus?
Possible causes include a damaged or disconnected downstream hose, clogs in the hose, or a faulty DPFE sensor.
4. How can I diagnose the issue causing OBDII code P1406 on my 2008 Ford Focus?
You can visually inspect the downstream hose for damage or blockages, test the DPFE sensor for proper functioning, and use a scan tool to monitor EGR system readings.
5. Can I continue to drive my 2008 Ford Focus with OBDII code P1406 related to the DPFE sensor circuit downstream hose?
It is not recommended to drive with this code present, as it can lead to poor engine performance and potentially cause further damage to the EGR system.
6. Is it possible to repair OBDII code P1406 on a 2008 Ford Focus related to the DPFE sensor circuit downstream hose myself?
Depending on your mechanical skills, you may be able to replace the downstream hose or DPFE sensor yourself. However, thorough diagnosis is recommended to ensure proper repair.
7. Are there any preventive maintenance tips to avoid OBDII code P1406 in a 2008 Ford Focus?
Regularly inspecting the EGR system components, such as the hoses and sensors, for signs of wear or damage can help prevent issues that trigger this code.
8. How much does it typically cost to repair OBDII code P1406 on a 2008 Ford Focus related to the DPFE sensor circuit downstream hose?
The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.
9. Will resetting the OBDII code P1406 on my 2008 Ford Focus make the issue related to the DPFE sensor circuit downstream hose go away?
Resetting the code will clear it temporarily, but if the underlying issue is not addressed, the code is likely to reappear once the problem is detected again by the vehicle's computer.
10. How urgent is it to address OBDII code P1406 on a 2008 Ford Focus linked to the DPFE sensor circuit downstream hose?
It is recommended to address this code promptly to prevent any further damage to the EGR system and ensure optimal engine performance and fuel efficiency.
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