P1400 – Ford DTC

Ford DTC P1400 – Differential Pressure Feedback Electronic Sensor circuit Low Voltage

DTC P1400 meaning on Ford

The DTC P1400 code on a Ford vehicle indicates an issue with the Differential Pressure Feedback Electronic (DPFE) sensor circuit registering low voltage. The DPFE sensor is responsible for monitoring the exhaust gas recirculation (EGR) system’s operation by measuring the pressure difference across the EGR valve.

Ford DTC P1400 symptoms

Symptoms of a DTC P1400 on a Ford may include:

• Illuminated check engine light
• Decreased engine performance
• Increased fuel consumption
• Rough idling or stalling

Ford DTC P1400 causes

Common causes of a DTC P1400 on a Ford can include:

• Faulty DPFE sensor
• Wiring or connector issues in the DPFE sensor circuit
• EGR system blockages or malfunctions

Ford DTC P1400 seriousness

While a DTC P1400 may not cause immediate drivability issues, it can lead to decreased fuel efficiency and increased emissions. Ignoring this code can potentially result in long-term engine damage or failure.

How to diagnose DTC P1400 on Ford

To diagnose a DTC P1400 on a Ford, follow these steps:

1. Use an OBD-II scanner to retrieve the trouble codes.
2. Inspect the DPFE sensor and its wiring for any visible damage or corrosion.
3. Check the EGR system for blockages or malfunctions.
4. Test the DPFE sensor’s voltage and signal to determine if it is functioning correctly.

How to fix DTC P1400 on Ford

To fix a DTC P1400 on a Ford, consider the following:

1. Replace the DPFE sensor if it is faulty.
2. Repair any damaged wiring or connectors in the DPFE sensor circuit.
3. Clean or replace the EGR valve if necessary.
4. Clear the trouble codes and test drive the vehicle to ensure the issue is resolved.

How to erase DTC P1400 on Ford

To erase a DTC P1400 on a Ford:

1. Use an OBD-II scanner to clear the trouble codes.
2. If the underlying issue has been fixed, the check engine light should turn off after a successful code clearing.

Recommended tools for Ford diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.