If you have a Chevy Malibu with a P1101 error code, there are a few fixes that can solve the problem.
A P1101 error code is listed as “MAF Out of Self Test Range.”
Some scan tools will give the error as an “Intake Air Flow System Performance.”
When the Chevy Malibu first starts, the mass airflow sensor (MAF) does a self-diagnostic test. If the results are out of range, a P1101 error code is given.
There is usually an issue with the MAF sensor, throttle body, or a vacuum leak.
Causes and Fixes P1101 Chevy Malibu
- Fix #1: Throttle Body
- Fix #2: Mass Airflow Sensor (MAF)
- Fix #3: Vacuum Leak
Sometimes it will look clean but has dirt somewhere that requires it to be cleaned.
Example Throttle Body and Air-Intake Cleaner on Amazon
CRC 05078 Throttle Body and Air-Intake Cleaner – 12 Wt Oz.
The mass airflow sensor is located at the air intake filter box and is easy to clean or replace.
It is usually best to clean the sensor first to see if the error clears.
A vacuum leak can cause many different issues, including a P1101 error code.
If a leak is big, it can often be heard, but small leaks can be hard to find.
A spray bottle can be used to see if the idle changes when the leak is sprayed to help pinpoint the location.
A common vacuum leak point is the PVC valve which depending on the Chevy Malibu year, may have two.
Often if the PVC valve has gone bad, it will make a hissing noise.
The Chevrolet Malibu is a great car, but like all vehicles can have issues, especially as it ages.
One such common issue is a P1101 OBDII error code.
The first thing to check is how dirty the throttle body is and clean it if necessary.
Often they can look clean but have dirt or grim somewhere that is causing an issue.
Using throttle body cleaner, it can be spayed and cleaned up with a rag.
Depending on how dirty it is, it may need to be removed and cleaned very well.
Have you had issues with a Chevy Malibu P1101 OBDII error code? Let us know your thoughts below.