What does code P0101 mean and is it safe to drive?
P0101: Mass Air Flow Circuit Range/Performance. Here’s what it means, what usually causes it, what repairs typically cost, and how urgent it is to keep driving.
PowertrainGenerally safe to drive
Repair cost
$20–$350
System
Powertrain
Urgency
medium
What this code means
The MAF sensor signal is outside the expected range. Often dirty sensor or intake leak.
Common causes
- Dirty or contaminated MAF sensor
- Intake leak after MAF
- Faulty MAF sensor
Symptoms
- Check Engine Light
- Rough idle, hesitation
- Poor acceleration or fuel economy
Typical fixes
- Clean MAF with MAF cleaner
- Replace MAF if cleaning doesn't help
- Fix intake leaks
Repair cost range
Repairs for P0101 often fall between $20 and $350, depending on the cause and your vehicle.