P0102 Ford Bronco
MAF Sensor Circuit Low Input · Powertrain Code · Medium · Repair: Easy
What is P0102?
The MAF sensor is reading below its expected range. Could indicate a dirty sensor, air leak, or wiring issue.
When the Ford Bronco triggers code P0102 (maf sensor circuit low input), it typically points to an issue in the powertrain system. Below you'll find the most common causes, symptoms, and repair options specific to the Ford Bronco.
This repair is rated easy, meaning basic tools, no lift needed.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Ford Bronco.
Common Causes on Ford Bronco
- Disconnected or damaged MAF sensor connector
- Massive vacuum or boost leak on EcoBoost turbocharged engines
- Failed MAF sensor with low signal output
- Rodent damage to MAF sensor wiring (common on trucks parked outdoors)
Symptoms
- Check engine light
- Very rough idle, may stall
- Severe lack of power
- Black exhaust smoke
- Engine runs extremely rich
Notes for Ford Bronco
Always check for rodent damage on F-150 and Ranger wiring harnesses near the air filter box — Ford uses soy-based wire insulation that rodents love.