Intake Air Temperature Sensor Circuit Low/Intermittent
2015-2021 Kia Sedona 3.3L V6
Description
The PCM has detected an intermittent low-voltage condition on the Intake Air Temperature sensor circuit. The signal drops below the expected minimum voltage sporadically, affecting air density calculations.
Symptoms
- Check Engine Light
- Minor driveability issues during signal dropout
- Slightly rough cold starts
Common Causes
- Loose IAT sensor connector
- Corroded IAT sensor wiring
- Intermittent open in IAT sensor circuit
- Faulty IAT sensor with internal intermittent fault
Diagnostic Steps
- Wiggle test IAT sensor connector while monitoring voltage on scan tool
- Inspect IAT sensor connector pins for corrosion
- Test IAT sensor resistance at various temperatures
- Check wiring continuity in IAT circuit
Repair Notes
Repair or replace the IAT sensor connector; replace the IAT sensor if it has an internal intermittent fault.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
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- P0003Fuel Volume Regulator Control Circuit Low
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- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1111 on Other Vehicles
Common Questions
What does code P1111 mean on a 2015-2021 Kia Sedona?
P1111 stands for "Intake Air Temperature Sensor Circuit Low/Intermittent". The PCM has detected an intermittent low-voltage condition on the Intake Air Temperature sensor circuit. The signal drops below the expected minimum voltage sporadically, affecting air density calculations.
What are the symptoms of P1111 on a Kia Sedona?
Common symptoms of P1111 include: Check Engine Light, Minor driveability issues during signal dropout, Slightly rough cold starts.
What causes P1111 on a 2015-2021 Kia Sedona?
Common causes of P1111 include: Loose IAT sensor connector, Corroded IAT sensor wiring, Intermittent open in IAT sensor circuit, Faulty IAT sensor with internal intermittent fault.