P1100 Mass Air Flow Sensor Intermittent
What does P1100 mean on a Ford?
P1100 — Mass Air Flow Sensor Intermittent. This Ford-enhanced code applies to F-150, Mustang, Explorer, Ranger, Taurus.
Common causes of P1100
- Loose or corroded MAF sensor connector making intermittent contact
- Chafed MAF signal wiring that opens over bumps or vibration
- Contaminated MAF sensing element dropping out at certain airflows
- Cracked air intake duct flexing the sensor harness
- Failing MAF sensor with internal intermittent
How to fix P1100
- Wiggle-test the MAF connector and harness while watching live readings
- Inspect the intake duct for cracks that move the sensor
- Clean the MAF element with approved cleaner
- Graph MAF output on a road test and look for dropouts
- Replace the sensor if dropouts persist with a solid connector