What usually causes it
- A loose or dirty plug on the sensor, or damaged wires
- A dirty or failed air flow sensor
- A blown fuse or a bad ground for the sensor
P0102Starts at: OK to drive, fix when convenient
Air flow sensor (MAF) signal is too low
The mass air flow (MAF) sensor measures how much air goes into the engine. Its signal is lower than it should be.
Check this first
Make sure the plug on the air flow sensor is clipped on tight and looks clean.
What to watch for
- Stalling or hard starting
- Rough idle or hesitation when you press the gas
- A flashing check engine light, which means a bad misfire
Can I keep driving?
We rate P0102 as OK to drive, fix when convenient, as a starting point. Keep an eye on the signs below. If the light starts flashing, stop driving soon.
Quick answers about P0102
What does P0102 mean?
Air flow sensor (MAF) signal is too low. The mass air flow (MAF) sensor measures how much air goes into the engine. Its signal is lower than it should be.
Can I keep driving with P0102?
We rate P0102 as OK to drive, fix when convenient, as a starting point. Keep an eye on the signs below. If the light starts flashing, stop driving soon.
What usually causes P0102?
The most common causes, in order: A loose or dirty plug on the sensor, or damaged wires; A dirty or failed air flow sensor; A blown fuse or a bad ground for the sensor.
Estimates only. A mechanic should confirm. The same code can mean slightly different things on different cars; the app explains it for your exact year, make, model and mileage.