P1103 GMC code

The Powertrain Control Module (PCM) stores a P1103 trouble code when the voltage signal from the Mass Air Flow (MAF) sensor is higher than normal but still falls within the range specified by the manufacturer.

Where is the MAF sensor located?

The mass air flow sensor (MAF) is a key component of the electronic fuel injection system in a car. It is located between the air filter and the engine’s intake manifold. In some cars, the intake air temperature (IAT) sensor is built into the mass air flow sensor.

What does Engine code P0103 mean?

P0103 is the code for a problem with the Mass Airflow (MAF) Sensor having a high voltage output to the Engine Control Unit (ECU).

What does MAF sensor do?

The mass air flow (MAF) sensor, part of your vehicle’s electronic fuel injection system, is responsible for calculating the total amount of air entering the engine. A contaminated or failed mass air flow sensor cannot measure the amount of air flow correctly.

What does po1101 code mean?

When a P1101 trouble code is stored, it means that the PCM detected a discrepancy with the voltage from the MAF sensor. This problem can be detected while the PCM is running a self diagnostic called a Key On Engine Running (KOER) test.

How do I fix code P0103?


Zitat von Youtube: You can spray the maf sensor cleaner onto the wire perpendicularly to the ground so that it won't damage the maf sensor reinstall the maf sensor back in the car after it gets dry.

What happens when mass air flow sensor fails?

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.

How can you tell if a mass airflow sensor is bad?

Zitat von Youtube: Okay engine stopped if your engine stops. That means that it's working correctly. If you disconnect that and your car keeps running your mass airflow your mass airflow sensor is not working properly.

How much does it cost to replace a mass air flow sensor?

MAF Sensor Replacement Cost



The replacement cost of a mass air flow sensor can anywhere from $80 to $380. The cost of the part alone is about $30 to $300 with the lower end of the range for common aftermarket mass air flow sensors while higher quality or more complicated OEM sensors are more expensive.