Question about 2004 Mazda Tribute

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Engine light on mazda tribute 2002

My engine light came on and they put it on the computer and it said insuficent air flow EGR so they replaced this and cleared the codes and I got 15 ks down the road and it came back on Help Thet have know idea

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  • Anonymous Mar 19, 2014

    2003 mazda

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Have it checked again and see what code it is. if it is P0401 it is probably the sensor shown below, The DPFE (Diferential Pressure Sensor)sensor is usually mounted on the engine and is connected to the pipe that runs from the exhaust manifold to the EGR valve with two rubber hoses. When the sensor goes bad, the Check Engine light comes on and typically sets any or all of teh following fault codes: P0171 & P0174 (lean codes), and/or P0401 (insufficient EGR flow). Nine out of ten times, the fault is not a bad EGR valve or a vacuum leak, but a bad DPFE sensor. A replacement costs about $112 at Ford, or about $48 at an aftermarket auto parts store.I hope this helps.

Posted on Nov 08, 2008

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2004 freestar code po401 what is the solution ?

Posted on Feb 18, 2013

  • james korpa Feb 18, 2013

    2004 freestar code po401 what i
    s the solution ?

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Some of these intakes have a channel under the throttle body that supplies flow to the EGR. The channel is below the mounting plate for the air horn. Also clear the computer of old Codes.

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