P1406 2001 Ford F150 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 2001 Ford F150 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 2001 Ford F150 Description
The Ford DPFE/EGR system is controlled by the Powertrain Control Module (PCM). The system employs an EGR Valve, an Electronic Vacuum Regulator (EVR), and a Delta Pressure Feedback EGR sensor (DPFE).
The DPFE Sensor measures EGR flow across an orifice located inside the special EGR Tube. The orifice is positioned between two hose ports coming off the tube which are connected to the DPFE sensor with special heat-resistant hoses. When the EGR Valve is open, a pressure differential is created across the orifice (intake manifold pressure vs. exhaust pressure). By design, this difference in pressure is measured by the DPFE sensor in terms of voltage. The DPFE voltage signal output to the PCM is directly proportional to the flow of exhaust gas entering the intake manifold.
What are the Possible Causes of the DTC P1406 2001 Ford F150?
- 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 2001 Ford F150?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1406 2001 Ford F150 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 2001 Ford F150 Code
1. What are the common symptoms of OBDII code P1406 in a 2001 Ford F150 related to the DPFE sensor circuit downstream hose?
The common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling.
2. What is the most common cause of OBDII code P1406 in a 2001 Ford F150 related to the DPFE sensor circuit downstream hose?
The most common cause is a malfunctioning or clogged DPFE sensor downstream hose, which can lead to inaccurate readings and trigger the code.
3. How can I diagnose a faulty DPFE sensor downstream hose in my 2001 Ford F150 when OBDII code P1406 is triggered?
You can visually inspect the hose for any signs of damage or blockage, check for loose connections, and use a multimeter to test for proper voltage and continuity.
4. Can a clogged EGR valve cause OBDII code P1406 in a 2001 Ford F150 related to the DPFE sensor circuit downstream hose?
Yes, a clogged EGR valve can disrupt the flow of exhaust gases and affect the DPFE sensor's readings, leading to the triggering of the code.
5. Are there any DIY repair tips for fixing OBDII code P1406 in a 2001 Ford F150 related to the DPFE sensor circuit downstream hose?
You can try cleaning or replacing the DPFE sensor downstream hose yourself, following manufacturer guidelines and using the proper tools to ensure a successful repair.
6. How important is it to address OBDII code P1406 in a 2001 Ford F150 related to the DPFE sensor circuit downstream hose promptly?
It is crucial to address the issue promptly as ignoring the code can lead to further engine problems, reduced fuel efficiency, and potential damage to other components.
7. Can resetting the OBDII code P1406 in a 2001 Ford F150 related to the DPFE sensor circuit downstream hose temporarily solve the issue?
Resetting the code may temporarily clear the warning light, but if the underlying problem with the DPFE sensor downstream hose is not fixed, the code is likely to reappear.
8. Is it safe to continue driving a 2001 Ford F150 with OBDII code P1406 related to the DPFE sensor circuit downstream hose?
It is not recommended to drive the vehicle with this code present, as it can lead to engine performance issues and potential damage if left unaddressed.
9. How much does it typically cost to repair OBDII code P1406 in a 2001 Ford F150 related to the DPFE sensor circuit downstream hose?
The cost of repair can vary depending on the extent of the issue, but it may range from $100 to $300 for parts and labor.
10. Can a mechanic easily fix OBDII code P1406 in a 2001 Ford F150 related to the DPFE sensor circuit downstream hose?
Yes, a qualified mechanic should be able to diagnose and repair the issue efficiently, ensuring that the DPFE sensor downstream hose functions properly and the code is resolved.
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