P0100
Mass Air Flow Sensor
Generic code
Fuel and Air Metering
High severity
Hard repair
Free on OBD DashX
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What P0100 means
- The fault code P0100 indicates that there is a problem in the circuit for measuring the mass or volume of air flowing into the engine. This can cause the engine to run poorly or not start at all.
Possible symptoms
- Illuminated check engine light
- Reduced engine power or acceleration
- Engine stalls or hesitates during acceleration
- Engine runs roughly or idles poorly
- Engine may not start at all
Possible causes
- Faulty mass air flow (MAF) sensor
- Dirty or contaminated MAF sensor
- Broken or damaged MAF sensor circuit wiring or connectors
- Failed powertrain control module (PCM)
- Clogged air filter
- Vacuum leaks
- Faulty intake air temperature (IAT) sensor
Related parts
- Mass Air Flow Sensor: A mass (air) flow sensor (MAF) measures the amount of air entering the engine to ensure proper combustion. This car's malfunctioning MAF sensor will lead to poor fuel economy and performance
Possible solutions
- Replace the faulty MAF sensor
- Clean the MAF sensor with specialized cleaner
- Check and repair any damaged MAF sensor circuit wiring or connectors
- Replace the powertrain control module (PCM) if necessary
- Replace the clogged air filter
- Fix any vacuum leaks
- Replace the faulty intake air temperature (IAT) sensor
Free on OBD DashX
P0100 on OBD DashX
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