What does P1404 mean on a Ford?

P1404. EGR Valve Stuck Closed. Applies to F-150, Ranger, Explorer, Taurus.

What causes P1404 on a Ford?

Carbon-seized EGR valve pintle Failed EGR vacuum solenoid or motor Blocked vacuum supply to the valve Broken EGR position feedback Wiring fault in the EGR control circuit

How do I fix P1404 on a Ford?

Attempt to command the EGR open and watch position feedback Check vacuum supply at the valve where applicable Remove the valve and test pintle movement by hand Decarbonize or replace the valve Verify flow returns with a road test and scan tool

Code

P1404

EGR Valve Stuck Closed

Category: Powertrain - Auxiliary Emissions Controls
Severity: Check Engine Light
Applies to: F-150, Ranger, Explorer, Taurus
Related: P0401 Exhaust Gas Recirculation Flow Insufficient Detected on OBD Codes List

Findings, check these first

Carbon-seized EGR valve pintle
Failed EGR vacuum solenoid or motor
Blocked vacuum supply to the valve
Broken EGR position feedback
Wiring fault in the EGR control circuit

Standard procedure

Attempt to command the EGR open and watch position feedback
Check vacuum supply at the valve where applicable
Remove the valve and test pintle movement by hand
Decarbonize or replace the valve
Verify flow returns with a road test and scan tool

Code lookup

Type a code above, or start from a symptom or a common code.

Press / to jump to the box. Ford-enhanced powertrain, body, chassis and network codes. Generic P0xxx codes live on OBD Codes List.

Sources and review

Review: qualified. Read the source limits below.

OBDII.pro: P1404 Ford definition
live reference page (obdii.pro)
Supports: Ford-family meaning for P1404: IAT - B Circuit Malfunction/ Exhaust Gas Recirculation Closed Position Performance
Fetched directly. obdii.pro is a publisher independent of the engine-codes family.

Last updated 2026-09-04.

Report a correction for P1404. Include your vehicle, the issue and a source if you have one.