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Why does the engine light keep coming on indicating code PO402 excessive EGR flow detected in a 2000 Mazda protege after the egr valve and EGR booster sensor were replaced?


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2007-12-24 04:55:26
2007-12-24 04:55:26

The answer posted previously seems to be taken verbatim from this site, and probably copyrighted there:

Mazda EGR Flow: Low or Excessive?

http://www.asashop.org/autoinc/sept2002/techtips.cfm

and if that doesn't work, there are additional tips here:

P0402 EGR code Help - Automotive Message Forums

http://www.automotivehelper.com/topic478910.htm

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