P1401 2001 Ford F150 Code - DPFE Sensor Circuit High
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, Differential Pressure Feedback Electronic sensor harness is open or shorted, Differential Pressure Feedback Electronic sensor circuit poor electrical connection. 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
- P1401 2001 Ford F150 indicates DPFE Sensor Circuit High.
- Common causes
- Common causes include Faulty Differential Pressure Feedback Electronic (DPFE) sensor, Differential Pressure Feedback Electronic sensor harness is open or shorted, Differential Pressure Feedback Electronic sensor circuit poor electrical connection.
- 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 P1401 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 P1401 2001 Ford F150?
- Faulty Differential Pressure Feedback Electronic (DPFE) sensor
- Differential Pressure Feedback Electronic sensor harness is open or shorted
- Differential Pressure Feedback Electronic sensor circuit poor electrical connection
- Damaged Powertrain Control Module (PCM)
How to Fix the DTC P1401 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
There is a factory service bulletin for the 2001 Ford F-150:
2001 Ford F-150 Factory Service Bulletin OBDII Code P1401 Code
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1401 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 P1401 2001 Ford F150 Code
1. What are the common symptoms of OBDII code P1401 on a 2001 Ford F150?
- Common symptoms include rough idling, engine stalling, decreased fuel efficiency, and a Check Engine Light illuminated on the dashboard.
2. What does the OBDII code P1401 on a 2001 Ford F150 indicate?
- The code P1401 indicates a fault in the Differential Pressure Feedback EGR (DPFE) sensor circuit, specifically a high voltage condition.
3. What are the possible causes of the DPFE Sensor Circuit High code on a 2001 Ford F150?
- Possible causes include a faulty DPFE sensor, damaged wiring or connectors in the sensor circuit, or a clogged EGR system.
4. How do I diagnose the DPFE Sensor Circuit High issue on a 2001 Ford F150?
- Diagnosis typically involves checking the DPFE sensor's voltage, inspecting the sensor and its connections for damage, and testing the EGR system for blockages.
5. Can I drive my 2001 Ford F150 with the P1401 code?
- It is not recommended to drive the vehicle with the P1401 code, as it can lead to poor engine performance and potential damage if left unaddressed.
6. How can I repair the DPFE Sensor Circuit High issue on my 2001 Ford F150?
- Common repairs include replacing the DPFE sensor, repairing damaged wiring or connectors, and cleaning or replacing components in the EGR system.
7. Will resetting the Check Engine Light resolve the P1401 code on a 2001 Ford F150?
- Resetting the Check Engine Light may temporarily clear the code, but it will likely return if the underlying issue causing the code is not addressed.
8. Is it safe to continue driving my 2001 Ford F150 if the DPFE Sensor Circuit High code comes on intermittently?
- It is not recommended to continue driving the vehicle if the code comes on intermittently, as it can indicate an underlying issue that needs to be addressed.
9. Can a DIY enthusiast repair the DPFE Sensor Circuit High issue on a 2001 Ford F150?
- Depending on the level of expertise, DIY enthusiasts may be able to replace the DPFE sensor or check for basic wiring issues, but more complex diagnostics may require professional assistance.
10. How much does it typically cost to repair the DPFE Sensor Circuit High issue on a 2001 Ford F150?
- The cost of repairs can vary based on the specific issue, but replacing the DPFE sensor can range from $100 to $200, while addressing more complex wiring or EGR system issues may cost more.
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