P0400

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Old 05-10-04, 12:06 PM
jabari
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P0400

1997 Mazda Millenia 2.5L 6cyl Automatic.
While scanning my car for DTC I pulled up this code PO400 Exhaust Gas Recirculation Flow Malfunction. I am not having any driveabilty problems. Is the code telling me that there is a problem with the EGR Valve or the EGR system.
 
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Old 05-10-04, 02:32 PM
Desi501's Avatar
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Yes, that's what it's saying. There's many possibilities there like Egr valve, EGR solonoid, plugged passage, feedback transducer, EGR sensor. You need to get the trouble tree for that code to systematically trace it down.
 
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