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Code P0102 MAF sensor?

Tiny
JLEXPRESS
  • MEMBER
  • 2001 CHEVROLET EXPRESS
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
I have a p0102 code, engine stumbles a bit. I checked the connector for voltage, and it had no power. The control wire had 5 volts. I'm looking for a wiring diagram as well as steps going forward to solve.
Friday, September 30th, 2022 AT 4:26 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

If you look below, I attached both the wiring schematics for the entire powertrain control module and the diagnostics specific to the code.

You may want to try servicing it.

Here is a link that explains how that is done:

https://www.2carpros.com/articles/mass-air-flow-service

Let me know what wire didn't have power.

Take care,

Joe

See pics below. Note: I had to cut each wiring schematic pic in half to make it readable for you. I did overlap them so you can follow from one to the next.
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Friday, September 30th, 2022 AT 10:44 PM

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