2000 GMC Jimmy check Engine Light soon

Tiny
ESTJAN14
  • MEMBER
  • 2000 GMC JIMMY
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 96,000 MILES
My engine light comes on and then goes of with in hours or maybe the next day. I ran a dignostic test and it came back with the codes of p0101 p0174 p0171. What does that mean and I just had the fuel pump replaced last week. I have put so much money into this SUV than any other car I have owned. Its Killing me.
Thursday, October 2nd, 2008 AT 11:30 PM

1 Reply

Tiny
SWILLIAMS
  • MECHANIC
  • 597 POSTS
P0101 - Mass air flow sensor circuit range problem.
P0171 - System too lean Bank 1
P0174 - System too lean Bank 2

Check the Mass Air flow sensor connection and test the sensor as well. You can look at the data live if your scan tool allows it.
A bad MAF can cause all three codes.
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Monday, October 13th, 2008 AT 8:29 PM

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