Drive DTCP0101 – Air flow sensor reading is off
Mass air flow circuit range/performance
Fuel and air · generic OBD-II code
You can drive it, but take it easy and get it looked at soon – waiting usually makes the repair bigger.
Check this first
Look for a loose or split air intake hose between the filter box and the engine, and a dirty air filter.
What usually fixes it
In the order a good shop checks them. Typical total: $52–$418 at $130 an hour.
Clean the air flow sensor
Dust and oil film on the sensor wire make it under-read.
Air filter and intake hose
A split hose lets in air the sensor never measured.
Mass air flow sensor
The sensor drifts with age and can't be cleaned back.
What the vehicle can tell you itself
A stored code is a headline, not the story. The vehicle also holds the conditions when it happened, how close the part is to the limit it fails at, what the fuel trims are doing, and whether the fault is still happening right now. Drive DTC reads all of it with a USB adapter and a Windows PC – and it can't change a single setting on the vehicle.
See what your vehicle says about P0101
Codes in plain English, what usually causes them, what the repair costs, and whether it's safe to drive.