CHECK ENGINE LIGHT SOON

2000 GMC Jimmy

Tiny

estjan14

October, 2, 2008 AT 11:30 PM

Engine Mechanical problem
2000 GMC Jimmy 4 cyl Four Wheel Drive Automatic 96000 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.

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1 Answer

Tiny

SWilliams

October, 13, 2008 AT 8:29 PM

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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