Skip to content

P1101 Chevy Malibu

I had this same error code in my 2017 Malibu but i De-Iced The Charge Air Cooler which builds up moisture, after that i deleted error code and car runs good, hope it helps!we cleaned throttle body changed mas new air filter light stayed off for about 6 months now back on. when the car starts it’s fine but soon as it gets warmed up there’s a hissing noise like a air leak. I want to change the pcv’s but I don’t know what kind of screw head it is. recommends that you always take your vehicle to a certified mechanic when necessary. Working on a car or truck can be dangerous and can cause damage. Safety precautions should always be taken before attempting to work on any vehicle. cannot be responsible for any damage and is meant to show general knowledge only.
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.

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 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.

What is the code p101 on a Chevy Malibu?
The mass air flow (MAF) sensor measures the amount of air entering the engine. Check engine light code P0101 is set when the measurement of air entering the engine by the mass air flow sensor is outside of the manufacturer’s specified range.
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.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.

What is Chevy engine code P1101?
Error code P1101 is set when the Powertrain Control Module (PCM) has issues executing the self-test on the Mass Air Flow Sensor. In other words, when the Powertrain Control Module (PCM) identifies a malfunction in the Mass Air Flow (MAF) sensor system, this is what happens.
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.

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:

What is code P1101 on Chevy Malibu?
The OBD code P1101 is a trouble code that appears when the Power Control Module (PCM) detects a fault within the Mass Air Flow (MAF) sensor system. When this code sets, the PCM detects a discrepancy with the voltage readings coming from the MAF sensor.
Почитав форумы стало понятно, что дело в грязной дроссельной заслонке. Берем инструмент и идем снимать. Процесс снятия описывать не буду, т.к все очень просто. Скажу одно: после снятие обучать не надо! Обучается она сама в процессе езды.

A problem with the mass air flow sensor often causes the ”check engine” or ”service engine soon” light in the vehicle instrument panel to illuminate. These lights come on when the engine computer detects some fault in one of the components of the emission control system.
If only battery voltage is present at the battery on a running engine, does this mean the alternator is “bad?” No, it does not. It only means that the alternator is not charging, but does not reveal why. Therefore, it does not point to a faulty alternator. All too often, the alternator is condemned by technicians due to this test alone. The cause could instead be a module that distributes the power to the vehicle and regulates the alternator.So, what can cause this error code? To begin with, there are the obvious failures: a faulty mass airflow sensor, or bad wiring and/or a short circuit. But there are a few other errors that can also cause this error code to display.Our friendly technicians can help sort out the confusion and connect you with the perfect PCM for your needs. Contact us today for advice, and they’ll help you find what you’re looking for. Alternatively, you can reach us on the phone at (888)-848-0144.

Your oxygen sensors can be the cause of the problem. As mentioned above, the solution is to replace your O2 sensors if you’re in any doubt, re-set your codes, and see if you can get the code to trigger again. If it doesn’t, congratulations! You’ve found an easy solution.
This all sounds pretty terrifying. But how you know that your P0101 code reading is accurate? Here are a few other symptoms that point to a mass airflow sensor failure.

What is P0101 problem?
Error code P0101 indicates that there is an issue with your mass airflow sensor (MAF). In this case, the MAF is out of its intended range. Other codes ranging from P0100-P0109, P0505-P0507, and P2096-P2099 often appear simultaneously with this code, given their similar proximate causes.
So, what does this error code mean for your car and its performance? Simply put, assuming everything is reading properly, your car isn’t correctly reading the amount of air that is flowing into the engine. When this happens, your car is not going to set the correct fuel-to-air ratio. When this sensor fails, your car will suffer a variety of problems. This can include rough idling, difficulty starting, and a reduction in gas mileage. Your car can also release a larger amount of pollutants, including unburned hydrocarbons, carbon monoxide, and nitrous oxide. Not only are these pollutants terrible for the environment, but they can also cause you to fail your emissions inspection. If it does turn out that you need to replace your PCM, it can be a confusing process. Finding the right computer is key, and sellers aren’t always 100 percent transparent about exactly what their products are.

Can you drive with a bad mass air flow sensor?
A bad MAF sensor can cause your vehicle to experience poor drivability issues such as engine stalling, jerking or hesitation during acceleration. This could happen while speeding up on the highway on-ramp or cruising down a city street. These issues can create dangerous situations causing accidents and injury.
So, how do you prevent a P0101 code from happening in the first place? Simply put, you need to maintain your parts. Here are a few things to keep an eye on.

Your car’s mass airflow sensor measures the amount, or mass, of air that enters the engine. Your car’s computers need this information to properly balance the fuel-to-air ratio since this allows them to dispense the correct amount of fuel through the fuel injectors. When this sensor starts displaying a P0101 code, it means that your car engine is not able to properly calculate this information.The first step to diagnosis is taking the car for a test drive, and replicating the conditions that triggered the code in the first place. If the same problem occurs, you’ll want to perform a visual inspection on the air intake book. Look for any cracking or leaks. Inspect your manifold gaskets as well, to ensure that there isn’t an actual leak. If everything checks out right, replace your mass airflow sensor with the correct OEM replacement. Then clear the code, and take your car for a test drive. Everything should come out just fine.

What causes a P0101 code?
Error code P0101 indicates that there is an issue with your mass airflow sensor (MAF). In this case, the MAF is out of its intended range.
If you can’t replicate the code, take your car to a reliable mechanic. They can perform further diagnosis, and make a recommendation as to the next steps.To diagnose the P0101 code, you’ll need to write down freeze frame data so you can recreate the circumstances. This is common with OBD code diagnosis, but it means you may need some specialized equipment. Be prepared to take a trip to the mechanic to get this information, even if you’re comfortable performing the repairs yourself. Your mass airflow sensor can also cause error code P0101 to display. In this case, the solution is to let your engine idle until it’s warmed up, then use your OBD tool to read the barometric pressure and see how it compares to actual conditions. If it’s higher or lower than the real barometric pressure, you should change your mass airflow sensor. Your Powertrain Control Module (PCM) may be faulty. Your car’s PCM is responsible for many engine functions, including the fuel-to-air ratio. If the PCM’s firmware is faulty, it can misread or outright ignore readings from O2 and mass airflow sensors. If you’d like to learn more about this, our list of 7 common PCM failure symptoms can help you determine whether this is indeed the problem. And if it turns out that you do need a replacement, our ultimate PCM buying guide can help you find the one you need.A malfunctioning MAF sensor, broken connections or wiring inside the MAF sensor harness, and an air leak either before or after the MAF sensor are all probable reasons for a P1101 error code. The storing of this code might also be caused by a bad electrical connection inside the MAF sensor circuit.

To diagnose a P1101 trouble code, a mechanic needs to use an OBD-II scanner and a digital volt/ohm meter. In addition, the mechanic should perform the following steps:
I am an experienced technical writer with a Master’s degree in computer science from BZU Multan University. I have written for various industries, mainly home automation, and engineering. I have a clear and simple writing style and am skilled in using infographics and diagrams. I am a great researcher and is able to present information in a well-organized and logical manner.

When the Powertrain Control Module (PCM) identifies a failure in the Mass Air Flow (MAF) sensor system, a P1101 trouble code is stored. P1001, P1100, P1102, P1103, P1104, and P1105 are examples of related codes that the PCM may record with a P1101 issue code.
Poor engine performance, as seen by an unpredictable performance at starter, rough idling, and reduced vehicle power while in operation, are all signs of a P1101 problem code, in addition to the code storage and eventual flashing of the check engine light. A vehicle with a stored P1101 issue code may also have a decrease in fuel economy.“Mass Airflow Sensor out of Self-Test Range” is a diagnostic problem code (DTC) P1101. This can happen for a variety of reasons, and a mechanic will need to figure out what caused the code to be activated in your case.

While a P1101 fault code does not normally prevent a vehicle from operating, it might cause the engine to run rough, lose power, and even waste more gasoline. This code should be rectified as quickly as possible because driving with it stored for an extended period of time might create internal engine difficulties.

When the Powertrain Control Module (PCM) has issues executing the self-test on the Mass Air Flow Sensor, it means there is an OBD2 error code P1101. As the engine starts, the Mass Air Flow Sensor (MAF) begins to measure the quantity of airflow in the engine. If the Powertrain Control Module (PCM) detects a voltage lower than 0.27 volt during key ON engine OFF. You may also identify the error code if the voltage is below 0.46 volt or above 2.44 volt. You may recognize this problem while the PCM is doing a self-diagnostic called a Key On Engine Running (KOER) test.

Although the Code P1101 will not prevent your car from running, it will have a lot of effects on its performance, such as inactivity that may occur at the most inconvenient time or higher fuel consumption. These and other factors may prompt the motorist to seek urgent correction. Furthermore, driving a car with the fault for an extended period of time may cause severe engine damage. While you can drive your automobile without taking care of the problems can be dangerous. Hence, you must correct it as soon as possible.

Is it safe to drive with P0101?
Diagnosis: Code P0101 does not pose any danger to the driver and will not prevent the vehicle from running. However, it will cause an increase in fuel consumption and rough operation. Sustained driving can lead to internal engine failure.
When diagnosing this error code, one of the most typical mistakes is replacing the MAF sensor without first cleaning it. Cleaning can often resolve the error P1101 code. It’s also a good idea to look for vacuum leaks, as these issues are what cause the code to persist.For a normal car, the approximate airflow voltage that you may expect during key ON engine OFF should be greater than 0.27 volt. Also, the airflow voltage when the key ON engine running should be between 0.46 volt and 2.44 volts.

Diagnosing or fixing the code P1101 should not be attempted by beginners, as incorrect diagnosis and repair could result in various complications in the vehicle. If you face the P1101, seek the assistance of a professional mechanic.
Here’s more info on top-rated airport parking, the best parking spots in your city, affordable auto insurance, easy auto refinance, and high-quality car washes near you.

P1101, like other DTC codes, has a number of symptoms that indicate its impact, the majority of which are due to drivability difficulties. The following are some of the most notable symptoms of this code.
Vehicle History’s team of automotive experts brings you the most accurate and up-to-date used car information. We research hundreds of models each year to help you gain confidence about one of your largest purchase decisions.Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

Can a bad O2 sensor cause a P0101 code?
If your O2 sensors or mass airflow sensors fail, as mentioned above, they can cause a P0101 code to display, and can also cause other problems for your engine over time.
Disclaimer: Information in questions, answers, and other posts on this site (“Posts”) comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided “as is” with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the “Verified” symbol in some Experts’ profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.The PCV valve is not serviceable and must be replaced with the whole valve cover if that ends up being the cause. I am about to step away for most of the day. Test the crankcase pressure and let me know what you find and we’ll go from there.I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money.This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!