P1100moderate severityPowertrain
MAF Sensor Intermittent
on 2018 Lincoln MKX 2.7L V6 EcoBoost · AWD
What this code means
The Mass Air Flow sensor signal is intermittent. The PCM has detected an erratic or fluctuating signal from the MAF sensor that drops in and out. This can cause inconsistent air/fuel mixture calculations.
Symptoms
- Check Engine Light
- Intermittent rough idle
- Hesitation on acceleration
- Stalling
- Erratic fuel economy
Common causes
- Loose MAF sensor connector
- Damaged MAF sensor wiring
- Dirty MAF sensor element
- Cracked air intake tube allowing unmetered air
- Failing MAF sensor
Diagnostic steps
- Inspect MAF sensor connector for looseness or corrosion
- Wiggle test MAF wiring while monitoring live data
- Inspect air intake tube for cracks or loose clamps
- Clean MAF sensor with MAF-specific cleaner
- Monitor MAF sensor readings on scan tool for erratic behavior
Repair notes
Clean MAF sensor first. If problem persists, inspect wiring and connectors. Replace MAF sensor if faulty.
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