Generally mass air flow sensors cannot be repaired, but are easy to replace. If the car is driving erratically (changing gears and revving randomly) , try unplugging the MAF sensor. This usually allows the car to go into "limp-home" mode. Not as bad as it sounds, just means a default air/fuel mixture is used.
Good luck.
I want to add this:
They sell mass air flow cleaner at the auto parts store. I tried it, it didn't work on mine.
When I unplugged the sensor, the car would die unless I kept the gas pedal down a couple inches. I bought an assembly on ebay. Problem solved. Before I changed it, it was hard to start. And when it did, it smelled like gas.... Then I would be sitting at a light and the car would start revving on it's own. People looked at me like I was nuts. They thought I wanted to race them.
In mass air flow sensor.
check your mass air flow sensor and your air filter. the MAS is located near your filter and it is in the pipe that goes to the intake
your mass air flow sensor is outta wack or your oxygen sensor... your mass air flow sensor is outta wack or your oxygen sensor...
mass air flow sensor
It my be your Mass Air Flow Sincere.
Mass air flow sensor is mounted after the air filter.
It doesn't have one.
Trouble code P0103 means: Mass air flow or volume air flow circuit high input
there called mass air flow sencer.
Mass air flow senser was not used on that year.
where is the mass air flow sensor on a toyota camry with a 2.2 4 cyli nder
where is mass air sensor on a1995 nissa xe pu trk