What usually causes it
- A dirty or failed air flow sensor
- A short in the sensor wiring
- Oil or water on the sensor
- A bad ground or a fault in the engine computer
P0103Starts at: OK to drive, fix when convenient
Air flow sensor (MAF) signal is too high
The mass air flow (MAF) sensor measures how much air goes into the engine. Its signal is higher than it should be.
Check this first
Look at the air filter. An oily filter or a dirty sensor can throw off the reading. A spray made to clean MAF sensors may help.
What to watch for
- Rough idle, stalling or hesitation
- Black smoke or poor gas mileage
- A flashing check engine light, which means a bad misfire
Can I keep driving?
We rate P0103 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 P0103
What does P0103 mean?
Air flow sensor (MAF) signal is too high. The mass air flow (MAF) sensor measures how much air goes into the engine. Its signal is higher than it should be.
Can I keep driving with P0103?
We rate P0103 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 P0103?
The most common causes, in order: A dirty or failed air flow sensor; A short in the sensor wiring; Oil or water on the sensor; A bad ground or a fault in the engine computer.
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.