Hello All,

I just bought a certified ‘21 Silverado (4cyl-Turbo) about a month ago. Since then, my check engine light popped on about a week later giving error code P1101. From what I could find online, I need to clean the mass airflow sensor, or replace it. I cleaned it with Mass-Airflow Cleaner, popped it back in and drove another 600miles, then it popped the same code. I did the same thing again, and another 200mi later, same code. I replaced the air filter and the mass airflow sensor at this point with parts from a dealer. 860mi later, popped the same code.

I can unplug the MAF sensor and plug it back in, and if I restart my car, the check engine light turns off.

What do you think the problem could be?
-my voltage-meter while running the car reads ~12-14v
-the wires do not seem damaged or loose going the the sensor

 

it's only 2 years old. Isn't this a warranty issue?

 

measure ground on MAF terminal E, voltage on D

 

You have to remember that the P1101 DTC is telling you that there is an issue with the MAF System - it is not telling you that there is a problem with the MAF sensor.

Hence, you should be looking at the electrical connections, looking for an air leak, checking the air filter for restrictions, etc.

Here is a webpage with more information:

https://www.autocodes.com/p1101_chevrolet.html

And, as mountainmanjoe mentioned, isn;t this a warranty issue? I would just let a dealership's service department handle it since it's a "...certified '21 Silverado..."

Good Luck!