Question about 2006 Kia Optima

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Respone to check light engine is Po401

What does code mean to repair ?

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Code 401 is for EGR flow insufficient.
There is a sensor that measures how much exhaust gas goes thru the EGR valve. The sensor could have failed, or the EGR valve may not be working. The sensor and valve would need to be tested.

Posted on Dec 11, 2012

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  • 1 more comment 
  • rdzbenjamin
    rdzbenjamin Dec 11, 2012

    What is the name of the sensor that helps control the EGR value ?

  • rdzbenjamin
    rdzbenjamin Dec 11, 2012

    Where is the sensor and EGR value located ?

  •  Stephen
    Stephen Dec 11, 2012

    I don't have the procedure, you would find it in a repair manual. There are vac hoses that control the valve and sometimes they are faulty or clogged up.

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Check engine light code po401


EGR insufficient flow detected, could be a failing exhaust system creating a blockage,

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What does a po430 code mean on a mercury cougar


EXHAUST RELATED ERROR CODES

There are 711 possible PO generic DTC error codes. Only 7 of the 711 codes are exhaust related.

PO401: Insufficient EGR Flow

PO402: Exhaust Gas Recirculation (EGR) Excessive Flow Detected

PO410: Secondary Air Injection System Malfunction

PO420: Catalyst System Efficiency Below Threshold (Bank 1)

PO421: Warm-Up Catalyst Efficiency Below Threshold (Bank 1)

PO430: Catalyst System Efficiency Below Threshold (Bank 2)

PO431: Warm-Up Catalyst Efficiency Below Threshold (Bank 2)

THINGS TO ASK YOURSELF OR YOUR CUSTOMER

Have there been any driveability or performance issues with the vehicle, have there been any recent repairs or tune-up work performed, if so was the check engine light reset and were the codes recorded on previous repair orders.

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1 Answer

Check engin light code po401 what does this mean.


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for more info pls refer to this link http://www.obd-codes.com/p0401
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1 Answer

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I have a ford explorer sport 2002 and my chek engine light came on it put out a code PO401 do you know what i need to buy


PO401 code means that:
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Visit http://www.troublecodes.net/OBD2/

and Visit www.repairpal.com

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Mercury sable 2001 duratec engine DOHC I get check engine light and diagnostic code PO401". Any suggestions?


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