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How to Test whether error code P0401 on a 2004 Ford Focus is accurate

Name: How to Test whether error code P0401 on a 2004 Ford Focus is accurate
Uploaded: 2010-09-28T20:14:40.000Z
Description: Error code P0401 on a 2004 Ford Focus indicates EGR Insufficient Flow, which usually means your DPFE sensor needs to be replaced. If you're not sure though, and you shouldn't be, watch this video to learn how to perform a test that will make sure your DPFE sensor is actually broken before you replace it.

By Duane Mariage

Sep 28, 2010 08:14 PM

Error code P0401 on a 2004 Ford Focus indicates EGR Insufficient Flow, which usually means your DPFE sensor needs to be replaced. If you're not sure though, and you shouldn't be, watch this video to learn how to perform a test that will make sure your DPFE sensor is actually broken before you replace it.

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