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Travis, Chevy Technician
Category: Chevy
Satisfied Customers: 980
Experience:  7+ years of GM dealership experience, GM ASEP trained, Assoc. Degree in Auto. Tech.
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Have engine code P0101, how do i fix it

Resolved Question:

Have engine code P0101, how do i fix it?
Submitted: 8 years ago.
Category: Chevy
Expert:  Travis replied 8 years ago.

Thanks for the question.


What year and model Chevy do you have?

Customer: replied 8 years ago.
2003 chevy s10 4wd 4.3v6
Expert:  Travis replied 8 years ago.

P0101 = The PCM detects that the actual MAF sensor frequency signal is not within a predetermined range of the calculated MAF value for more than 4 seconds.


Without the use of a scan tool that can read engine data, it will be hard to verify the exact cause of the code, but best bet is that its due to a MAF sensor.


Do you have an aftermarket intake on the truck?

Travis and other Chevy Specialists are ready to help you
Customer: replied 8 years ago.
Expert:  Travis replied 8 years ago.
Ok, lots of times an aftermarket intake will effect the sensor. Short of some wiring issue, the MAF sensor just has an electrical failure and needs to be replaced. Check all the surrounding wire before replacement just to make sure nothing is shorted or cut.