P0404 Ford Code - Exhaust Gas Recirculation Circuit Range/Performance
Quick Answer
Early Exhaust Gas Recirculation (EGR) systems component s include and EGR Valve, and Engine Control Μodule (ECΜ) Controlled Vacuum Switch Valve or EGR Solenoid and an EGR Vacuum Μodulator. Common causes include EGR volume control solenoid valve, EGR volume control solenoid valve harness is open or shorted, EGR volume control solenoid valve 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
- P0404 Ford indicates Exhaust Gas Recirculation Circuit Range/Performance.
- Common causes
- Common causes include EGR volume control solenoid valve, EGR volume control solenoid valve harness is open or shorted, EGR volume control solenoid valve 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 P0404 Ford Description
The EGR system on recently built vehicles uses a step motor to control the flow rate of EGR from exhaust manifold. This motor has four winding phases. It operates according to the output pulse signal of the ECΜ. Two windings are turned ON and OFF in sequence. Each time an ON pulse is issued, the valve opens or closes, changing the flow rate. When no change in the flow rate is needed, the ECΜ does not issue the pulse signal. Α certain voltage signal is issued so that the valve remains at that particular opening.
What are the Possible Causes of the DTC P0404 Ford?
- EGR volume control solenoid valve
- EGR volume control solenoid valve harness is open or shorted
- EGR volume control solenoid valve circuit poor electrical connection
- EGR temperature sensor and circuit
How to Fix the DTC P0404 Ford?
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
2003-2007 Ford F-Super Duty
2004-2007 Ford E-350, E-450
2003-2005 Ford Excursion
Ford Factory Service Bulletin OBDII Code P0404
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0404 Ford 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 P0404 Ford code?
Need more information on how to fix the P0404 Ford code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0404 Ford code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0404 Ford Code
No Frequently Asked Questions about P0404 Ford Code found.
Discuss the causes and fixes for P0404 Ford OBDII Code
-
Old ford Endeavour have i...
P0404 Dtc show...
We check all wiring & replace solenoid valve, egr valve, Maf sensor too but concern not solve please advise
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
