Ошибка p1101 chevrolet malibu

If you have a Chevy Malibu with a P1101 error code, there are some common causes and fixes that can solve the problem.

Causes include the MAF sensor, throttle body, and possible vacuum leak.

What is a P1101 on a Chevy Malibu?

A P1101 OBDII 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 self-diagnostic test 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.

3 Common Causes and Fixes P1101 Chevy Malibu

• Mass Airflow Sensor (MAF)


A bad or dirty mass airflow sensor can cause a P1101 error code.

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 before replacing it as they are often just dirty.

• Throttle Body


If the throttle body has failed or becomes dirty, it can give a P1101 code.

It is located at the back of the engine up against the firewall with the air intake hose attached.

If it is dirty, it can be cleaned up with throttle body cleaner and a rag.

Sometimes it will look clean but has dirt somewhere that requires it to be cleaning.

It may have also failed but cleaning it up often solves throttle body issues.

• Vacuum Leak

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 mechanic shop will use a smoke machine that feeds smoke into the system and comes out of the leak helping to find it.

A common weak 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.

Summary
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.

If the check engine light comes on and a code reader gives a P1101 trouble code, it is usually the mass airflow MAF, throttle body, or a leak.

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.

To clean it use throttle body cleaner; it can be sprayed and cleaned up with a rag.

Depending on how dirty it is, it may need to be removed and cleaned very well.

An air leak can also cause issues, with large leaks usually easy to find and mall leaks harder.

For hard-to-find leaks, certified mechanics will use a smoke machine that feeds smoke into the system and comes out of the leak location.

The mass airflow sensor reference voltage can also be checked along with fuel pressure, air leaks, vacuum system, fuel trim system, if the system is too lean, and self-test range.

Have you had issues with a Chevy Malibu P1101 OBDII error code? Let us know your thoughts below.

Error Code P1101 is defined as Mass Airflow Sensor Out of Self-Test Range. This means the Mass Airflow System is experiencing an issue like due to faulty sensor, air leak or bad connectors.

This code is a generic trouble code, meaning it applies to all cars equipped with OBD-II system, particularly those cars made since 1996 up to present. Specifications on the definition, troubleshooting, and repairs of course vary from one make and/or model to another.

Definition

Error Code P1101 takes place when the PCM (powertrain control module, also known as ECM or engine control module in other 2016 Chevrolet Malibu makes) detects a fault or discrepancy within the MAF (Mass Air Flow) sensor system, as the PCM conducts its self-diagnosis called KOER or Key On Engine Running. If the voltage from the MAF is greater or lesser than the manufacturer allowed, the test fails.

Other related codes include P1001, P1100, P1102, P1103, P1104, and P1105 code.

Common Symptoms

As with other error codes, P1101 triggers the Check Engine light on the dashboard and store the code. Other common symptoms include drivability issues that cause poor engine performance, such as:

• Rough idling
• Erratic startup
• Reduced engine power while running
• Increase in fuel consumption

Possible Causes

There are many possible causes for this code to appear, some of the most common causes include:

• Faulty MAF sensor
• Faulty connectors or wirings in the MAF harness
• Poor electrical connection in MAF sensor
• Air leaks before or after the MAF sensor

How to Check

As with other error codes, diagnosis for Error Code P1101 requires the use of OBD-II scanner and a DVOM (digital volt/ohm meter). The steps include:

• Visual inspection of the wirings and connectors of the MAF sensor harness; the technician should check all the connectors, wirings and other components associated with the MAF system
• Them, the technician check the air filter for debris to make sure there are no obstructed flow of air
• Then, after making the necessary repairs or replacements, the technician will clear the codes and test the system to see if the code comes back
• If the code returns, the mechanic will download the freeze frame data of the PCM, along with other stored codes
• The technician will also remove the MAF sensor carefully, to see if it’s dirty
• Next, he will conduct a smoke test to check for leaks before and after the MAF sensor within the vacuum system
• If there are no leaks detected after fixing the found leaks, the code will then be cleared again. They will then use the DVOM to test the MAF sensor for the reference voltage and ground.
• If no voltage or ground signal has been detected, they will disconnect the PCM and all related control modules, check the continuity within the battery ground
• The technician will then check for the continuity between the PCM and the MAF sensor, along with the continuity between the various control modules and the PCM
• Lastly, he will clear the codes again and retest the system to see if the code comes back

How to Fix

Repairs for this error code are as easy as its diagnosis, and as with other codes, a thorough diagnosis is needed for a complete repair.

• Repair or replacement of faulty, damaged, or loose connectors, wirings or other components within the MAF sensor harness
• Cleaning or replacement of dirty air filter
• Cleaning the MAF sensor using specialized cleaner. Allow the sensor to dry before replacing.
• Repair leaks within the vacuum system
• Replacement of the MAF sensor if it still doesn’t work after cleaning
• Replace faulty control module, such as PCM, if have been tested to be “bad”. Note that replacing the PCM will require reprogramming by the mechanic

One of the most common mistakes when diagnosing this error code is replacing the MAF sensor without trying to clean it first. In many cases, cleaning can solve the P1101 code. Also, it pays to check for vacuum leaks, as these kinds of problems are what lead to the persistence of the code.

Error Code P1101 may not cause major operation problems for your 2016 Chevrolet Malibu , but depending on the nature and severity of the problem, it can cause rough driving, power loss and increase in fuel consumption. Also, if left unaddressed for a long time, it can cause serious internal problems for the engine. Thus, it is important to have this error code fixed as soon as possible.