What does code P0102 mean and is it safe to drive?
P0102: Mass Air Flow Circuit Low Input. 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
$80–$400
System
Powertrain
Urgency
medium
What this code means
The MAF sensor signal voltage is lower than expected, indicating less airflow than the engine should be seeing.
Common causes
- Dirty or contaminated MAF sensor
- Air leaks before the MAF sensor
- Wiring issues causing low signal voltage
Symptoms
- Check Engine Light
- Hesitation, stalling, or poor acceleration
- Poor fuel economy
Typical fixes
- Clean or replace MAF sensor
- Inspect intake ducting and air filter
- Repair wiring/connectors
Repair cost range
Repairs for P0102 often fall between $80 and $400, depending on the cause and your vehicle.