
If your vehicle has this fault and you’re not comfortable diagnosing this issue at home, we recommend finding a RepairPal certified shop nearby to pinpoint the problem and give an accurate estimate for repairs. With a mass air flow sensor fault, the first step is to get it diagnosed to figure out what is causing the problem.

Clogged catalytic converter / restricted exhaust.

Clogged or improperly installed air filter.Damaged or disconnected air intake boot (snorkel).Dirty, obstructed, or faulty mass air flow sensor.Other causes are more complicated, such as a vacuum leak or a clogged catalytic converter. Some are easy to check and correct yourself, such as a dirty air filter or mass air flow sensor.

There are many potential causes of code P0101.
