P1112
IAT Sensor Intermittent
2002-2005 Ford Explorer 4.0L V6 SOHC 🇷🇺
Low SeverityPowertrain
Description
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.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0001Fuel Volume Regulator Control Circuit/Open
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0003Fuel Volume Regulator Control Circuit Low
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
P1112 on Other Vehicles
Common Questions
What does code P1112 mean on a 2002-2005 Ford Explorer?
P1112 stands for "IAT Sensor Intermittent". The Intake Air Temperature sensor signal is intermittent. The PCM detects erratic fluctuations in the IAT signal, which affects the air/fuel mixture calculations.
What are the symptoms of P1112 on a Ford Explorer?
Common symptoms of P1112 include: Check Engine Light, Rough idle when cold, Poor cold-start performance, Fluctuating idle.
What causes P1112 on a 2002-2005 Ford Explorer?
Common causes of P1112 include: Loose IAT sensor connector, Corroded IAT sensor wiring, Faulty IAT sensor, Damaged connector pins.