Code p0102 MAF sensor?

2001 CHEVROLET EXPRESS

200,000 MILES • 5.7L • V8 • 2WD • AUTOMATIC

JLEXPRESS

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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.

Sep 30, 2022 at 4:26 PM

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JACOBANDNICKOLAS

AUTOMOTIVE REPAIR CONTRIBUTOR
110,190 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.

Images (Click to enlarge)

Sep 30, 2022 at 10:44 PM