AutoCodes - Ford - P0404 FORD

P0404 FORD Code - Exhaust Gas Recirculation Circuit Range/Performance

Repair Importance Level: 2/3
Repair Difficulty Level: 2/3
Table of contents

|P0404 FORD code possible causes

  • 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 do I fix the P0404 FORD code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|P0404 FORD code tech notes

There is a factory service bulletin for the following Ford models:

2003-2007 Ford F-Super Duty
2004-2007 Ford E-350, E-450
2003-2005 Ford Excursion
Ford Factory Service Bulletin OBDII Code P0404





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|Cost of diagnosing the P0404 FORD code

Labor: 1.0

The cost of diagnosing the P0404 FORD code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|When is the P0404 FORD code detected?

An improper voltage signal is sent to ECM through the valve

|What are P0404 FORD code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine hesitation

|P0404 FORD code description

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. Depending on the engine and driving conditions, the ECΜ will control the EGR Solenoid which will operate the EGR Vacuum Μodulator to regulate the opening and closing of the EGR Valve.
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.
OBDII Code P0404 Ford - Exhaust Gas Recirculation Circuit Range/Performance - AutoCodes.com

|Need more information with the P0404 FORD code?

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|Need help with a P0404 FORD code?

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|P0404 FORD code comments

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