P0101moderate severityPowertrain
Mass Air Flow (MAF) Circuit Range/Performance
on 2020 Subaru Outback 2.5L H4 · AWD
What this code means
The MAF sensor reading is outside the expected range for the current engine operating conditions.
Symptoms
- Check Engine Light
- Poor fuel economy
- Hesitation
- Rough idle
- Stalling
Common causes
- Dirty MAF sensor
- Intake air leak
- Restricted air filter
- Faulty MAF sensor
- Exhaust leak near O2 sensor
Diagnostic steps
- Compare MAF reading to spec at idle and 2500 RPM
- Check for vacuum leaks
- Inspect air filter
- Clean MAF sensor
- Check for exhaust leaks
Repair notes
Clean or replace MAF sensor. Repair any intake leaks.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1