P1101
Mass Air Flow (MAF) Sensor Out of Self Test Range / Intermittent MAF
This code indicates that your car's computer has detected an issue with the Mass Air Flow (MAF) sensor's readings, meaning the amount of air entering the engine isn't what the computer expects, or the sensor is reporting intermittently.
Mass Air Flow (MAF) Sensor Out of Self Test Range / Intermittent MAF
Common causes
- high
Dirty or Faulty Mass Air Flow (MAF) Sensor
The MAF sensor can become contaminated with dirt or oil, leading to inaccurate readings, or fail electronically.
Typical part cost: $0-200 for cleaning/part
- medium
Vacuum Leaks
Leaking vacuum hoses, intake manifold gaskets, or PCV system components can introduce unmetered air, causing the MAF readings to be incorrect.
Typical part cost: $0-100 for repair
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First things to check
- 1Inspect the air filter and air intake tube for cracks, loose clamps, or obstructions.
- 2Carefully clean the MAF sensor with specialized MAF sensor cleaner.
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Related codes
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Frequently asked questions
What does the MAF sensor do?
The Mass Air Flow (MAF) sensor measures the amount of air entering the engine. This information is crucial for the engine computer to calculate the correct amount of fuel to inject for optimal combustion.
Can I clean my MAF sensor?
Yes, you can often clean a MAF sensor using a specialized MAF sensor cleaner. Never use regular brake cleaner or other solvents, as they can damage the delicate sensor elements. Always follow the product instructions carefully.
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