What causes P1401 on a Ford?

Failed DPFE sensor — heat and moisture kill these regularly on Ford trucks Shorted DPFE signal wire to reference voltage Clogged or melted EGR pressure hoses to the sensor Corroded DPFE connector terminals PCM reference voltage fault

How do I fix P1401 on a Ford?

Inspect the DPFE sensor for heat damage and the hoses for melting or blockage Read DPFE voltage KOEO — a stuck-high reading points at the sensor or circuit Check signal, reference and ground at the sensor connector Clear the hoses or replace them if restricted Replace the DPFE sensor with an updated Motorcraft part when the circuit tests good

P1401 Differential Pressure Feedback EGR Sensor Circuit High Voltage

Q: What does P1401 mean on a Ford?

P1401 — Differential Pressure Feedback EGR Sensor Circuit High Voltage. Applies to F-150, Ranger, Explorer, Taurus, Focus with DPFE-based EGR.

Category: Powertrain - Auxiliary Emissions Controls
Severity: Check Engine Light
Applies to: F-150, Ranger, Explorer, Taurus, Focus with DPFE-based EGR

What does P1401 mean on a Ford?

P1401 — Differential Pressure Feedback EGR Sensor Circuit High Voltage. This Ford-enhanced code applies to F-150, Ranger, Explorer, Taurus, Focus with DPFE-based EGR.

Common causes of P1401

Failed DPFE sensor — heat and moisture kill these regularly on Ford trucks
Shorted DPFE signal wire to reference voltage
Clogged or melted EGR pressure hoses to the sensor
Corroded DPFE connector terminals
PCM reference voltage fault

How to fix P1401

Inspect the DPFE sensor for heat damage and the hoses for melting or blockage
Read DPFE voltage KOEO — a stuck-high reading points at the sensor or circuit
Check signal, reference and ground at the sensor connector
Clear the hoses or replace them if restricted
Replace the DPFE sensor with an updated Motorcraft part when the circuit tests good