P0101Medium severity
Mass or Volume Air Flow Circuit Range/Performance
The signal from the Mass Air Flow (MAF) sensor is outside the expected range for current operating conditions.
Common causes
- Dirty or contaminated MAF sensor
- Air intake leak (unmetered air)
- Clogged or dirty air filter
- Faulty MAF sensor
Possible symptoms
- Check Engine Light on
- Poor acceleration
- Rough idle
- Stalling
Code breakdown
P — System
Powertrain (engine, transmission, fuel & emissions)
0 — Type
Generic (SAE standard, common to all manufacturers)
1 — Subsystem
Fuel and air metering