P1400 2001 Ford F150 Code - Differential Pressure Feedback Electronic Sensor Circuit Low Voltage
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 Differential Pressure Feedback Electronic Sensor harness is open or shorted, Differential Pressure Feedback Electronic Sensor circuit poor electrical connection, Faulty Differential Pressure Feedback Electronic Sensor. 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
- P1400 2001 Ford F150 indicates Differential Pressure Feedback Electronic Sensor Circuit Low Voltage.
- Common causes
- Common causes include Differential Pressure Feedback Electronic Sensor harness is open or shorted, Differential Pressure Feedback Electronic Sensor circuit poor electrical connection, Faulty Differential Pressure Feedback Electronic Sensor.
- 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 P1400 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 P1400 2001 Ford F150?
- Differential Pressure Feedback Electronic Sensor harness is open or shorted
- Differential Pressure Feedback Electronic Sensor circuit poor electrical connection
- Faulty Differential Pressure Feedback Electronic Sensor
- Damaged PCM
How to Fix the DTC P1400 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 P1400 Code
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1400 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.
Need more information about the P1400 2001 Ford F150 code?
Need more information on how to fix the P1400 2001 Ford F150 code? Get Access to Factory Service Manuals
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Frequently Asked Questions about P1400 2001 Ford F150 Code
1. What are the common symptoms of OBDII code P1400 on a 2001 Ford F150?
- Common symptoms include poor engine performance, potential stalling, rough idling, and reduced fuel efficiency.
2. What does the OBDII code P1400 indicate on a 2001 Ford F150?
- The code P1400 refers to an issue with the Differential Pressure Feedback Electronic (DPFE) sensor circuit registering low voltage.
3. What are the possible causes of the P1400 code on a 2001 Ford F150?
- Potential causes include a faulty DPFE sensor, damaged wiring or connectors in the sensor circuit, or a problem with the EGR (Exhaust Gas Recirculation) system.
4. How can I diagnose the OBDII code P1400 on my 2001 Ford F150?
- Diagnosis typically involves a visual inspection of the DPFE sensor and its wiring, checking for any signs of damage or corrosion. Using a multimeter to test the sensor's voltage output may also help pinpoint the issue.
5. Can I continue driving my 2001 Ford F150 with the P1400 code?
- It is not recommended to drive with the P1400 code present, as it can lead to poor engine performance and potential further damage to the vehicle's components.
6. Is it possible to repair the P1400 code on a 2001 Ford F150 myself?
- Depending on your mechanical skills, you may be able to replace the DPFE sensor or repair damaged wiring yourself. However, it is advisable to seek professional help for accurate diagnosis and repair.
7. How much does it typically cost to fix the P1400 code on a 2001 Ford F150?
- The cost can vary depending on the extent of the issue and whether you choose to DIY or seek professional help. Replacing the DPFE sensor can cost around $100 to $200, excluding labor.
8. Will resetting the OBDII code P1400 on my 2001 Ford F150 make it go away permanently?
- Resetting the code may temporarily make the warning light disappear, but if the underlying issue causing the P1400 code is not addressed, it is likely to reappear once the problem resurfaces.
9. How long does it take to repair the P1400 code on a 2001 Ford F150?
- The repair time can vary depending on the exact cause of the issue. Replacing the DPFE sensor or repairing wiring typically takes around 1-2 hours.
10. Are there any preventive measures to avoid encountering the P1400 code on a 2001 Ford F150 in the future?
- Regular maintenance of the EGR system, including checking the DPFE sensor and its connections, can help prevent the recurrence of the P1400 code.
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