P0404 - Exhaust Gas Recirculation Circuit Range/Performance

Repair Importance Level: 2/3
Repair Difficulty Level: 2/3    What is this?
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P0404 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 code P0404

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.

Cost of diagnosing the P0404 code

Labor: 1.0

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

When is the code detected?

An improper voltage signal is sent to ECM through the valve

Possible Symptoms

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

P0404 Description

Early Exhaust Gas Recirculation (EGR) systems components 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 the 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 - Exhaust Gas Recirculation Circuit Range/Performance - AutoCodes.com

P0404 More Information

Need more information on how to fix the P0404 code?
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Information for specific makes

  • P0404 ACURA Exhaust Gas Recirculation Valve Circuit Range/Performance
  • P0404 AUDI Exhaust Gas Recirculation Control Circuit Range/Performance
  • P0404 BUICK Exhaust Gas Recirculation Open Position Performance
  • P0404 CADILLAC Exhaust Gas Recirculation Open Position Performance
  • P0404 CHEVROLET Exhaust Gas Recirculation Open Position Performance
  • P0404 CHRYSLER Exhaust Gas Recirculation Position Sensor Performance   
  • P0404 DODGE Exhaust Gas Recirculation Position Sensor Performance   
  • P0404 FORD Exhaust Gas Recirculation Circuit Range/Performance   
  • P0404 GMC Exhaust Gas Recirculation Open Position Performance
  • P0404 HONDA Exhaust Gas Recirculation Valve Circuit Range/Performance
  • P0404 ISUZU Exhaust Gas Recirculation Open Position Performance
  • P0404 JEEP Exhaust Gas Recirculation Position Sensor Performance
  • P0404 MAZDA Exhaust Gas Recirculation Control Circuit Range/Performance
  • P0404 MERCEDES-BENZ Exhaust Gas Recirculation Circuit Range/Performance
  • P0404 MERCURY Exhaust Gas Recirculation Circuit Range/Performance
  • P0404 MITSUBISHI Exhaust Gas Recirculation Position Sensor Circuit Performance
  • P0404 PONTIAC Exhaust Gas Recirculation Open Position Performance
  • P0404 SATURN Exhaust Gas Recirculation Open Position Performance
  • P0404 VOLKSWAGEN Exhaust Gas Recirculation Control Circuit Range/Performance

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