P1112low severityPowertrain
IAT Sensor Intermittent
on 2021 Ford Bronco 2.3L I4 EcoBoost · 4WD
What this code means
The Intake Air Temperature sensor signal is intermittent. The PCM detects erratic fluctuations in the IAT signal, which affects the air/fuel mixture calculations.
Symptoms
- Check Engine Light
- Rough idle when cold
- Poor cold-start performance
- Fluctuating idle
Common causes
- Loose IAT sensor connector
- Corroded IAT sensor wiring
- Faulty IAT sensor
- Damaged connector pins
Diagnostic steps
- Inspect IAT sensor connector for corrosion or looseness
- Wiggle test wiring while monitoring IAT reading
- Test IAT sensor resistance (should change smoothly with temperature)
- Check wiring continuity
Repair notes
Repair connector or wiring. Replace IAT 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