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Home/DTC Codes/Lincoln/MKX/2014-2014 3.7L V6/P0404
P0404

EGR Control Circuit Range/Performance

2014-2014 Lincoln MKX 3.7L V6 🇨🇦

Moderate SeverityPowertrain

Description

The EGR valve is not responding as commanded by the PCM.

Symptoms

  • Check Engine Light
  • Rough idle
  • Stalling
  • Poor performance

Common Causes

  • Carbon restricting EGR valve movement
  • Faulty position sensor in EGR
  • EGR valve mechanically stuck

Diagnostic Steps

  1. Command EGR open/closed with scan tool and monitor position
  2. Check for carbon restricting movement
  3. Test position sensor

Repair Notes

Clean or replace EGR valve.

Related Codes

P0403EGR Control CircuitP0405EGR Sensor A Circuit Low

Other Powertrain Codes

P0404 on Other Vehicles

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Common Questions

What does code P0404 mean on a 2014-2014 Lincoln MKX?

P0404 stands for "EGR Control Circuit Range/Performance". The EGR valve is not responding as commanded by the PCM.

What are the symptoms of P0404 on a Lincoln MKX?

Common symptoms of P0404 include: Check Engine Light, Rough idle, Stalling, Poor performance.

What causes P0404 on a 2014-2014 Lincoln MKX?

Common causes of P0404 include: Carbon restricting EGR valve movement, Faulty position sensor in EGR, EGR valve mechanically stuck.

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