Engine-Codes - Ford - P0401 2010 Ford Fusion

P0401 2010 Ford Fusion Code - Exhaust Gas Recirculation Flow Insufficient Detected

- Code Popularity: 4,238 Views
- Repair Importance Level: 2/3
- Repair Difficulty Level: 2/3
Table of contents
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What are the Possible Causes of the DTC P0401 2010 Ford Fusion?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • EGR passage clogged
  • Faulty EGR Vacuum Modulator Valve
  • Faulty EGR Valve
  • Faulty EGR solenoid valve
  • EGR solenoid valve harness is open or shorted
  • EGR solenoid valve circuit poor electrical connection
  • Dead (Weak) battery
  • Faulty EGR temperature sensor and circuit
  • Exhaust gas leaks

Code Tech Notes

EGR flow malfunction could be caused by a clogged EGR valve or EGR tube. Before replacing any parts try cleaning the EGR valve, tube and passages. If the tubes are clean you may have to replace the EGR Pressure sensor to fix the problem.

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How to Fix the DTC P0401 2010 Ford Fusion?

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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0401 2010 Ford Fusion code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

When is the Code Detected?

Low EGR flow control is detected

What are Code Possible Symptoms?

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

What Does the P0401 2010 Ford Fusion Code Mean?

The EGR system is monitored during steady state driving conditions while the EGR is commanded on. The test fails when the signal from the differential pressure feedback EGR sensor indicates that EGR flow is less than the desired minimum.

P0401 2010 Ford Fusion Code - Exhaust Gas Recirculation Flow Insufficient Detected

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