1999 Chevy Malibu egr flow insuffient code po401

1999 CHEVROLET MALIBU
140,978 MILES • 6 CYL • FWD • AUTOMATIC
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DABBLERMAN44
  • MEMBER
  • 1 POST
put neg & positive to egr valve opens pintle turn key on check e terminal shows 11.6 dc volts # a termanal is grounded egr work only when 12 vlts put to terrninal from other 12 volts applied
Jun 2, 2008 at 6:48 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
The powertrain control module is not commanding the EGR valve.
Jun 2, 2008 at 7:07 AM
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