Feb 032011
 

I just failed my an emissions test with a fault code p0401: exhaust gas recirculation flow insufficient detected. Should I replace the EGR valve or try a different approach?

  One Response to “failed emmisions test”

  1. Most likely the EGR valve is fine. Depending on the vehicle(which you did not post) you most likely need to replace the EGR Regulator….

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