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P1111

Intake Air Temperature Sensor Circuit Low/Intermittent

2015-2021 Kia Sedona 3.3L V6

Low SeverityPowertrain

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

  1. Wiggle test IAT sensor connector while monitoring voltage on scan tool
  2. Inspect IAT sensor connector pins for corrosion
  3. Test IAT sensor resistance at various temperatures
  4. 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

P0110Intake Air Temperature (IAT) Sensor 1 CircuitP0112IAT Sensor 1 Circuit Low InputP1112IAT Sensor IntermittentP1112IAT Sensor IntermittentP1112IAT Sensor IntermittentP1112IAT Sensor Circuit Intermittent Low VoltageP1112IAT Sensor Circuit Intermittent Low VoltageP1112IAT Sensor Circuit Intermittent Low VoltageP1112IAT Sensor Circuit Intermittent Low VoltageP1112IAT Sensor Circuit Intermittent Low VoltageP1112IAT Sensor Circuit Intermittent Low VoltageP1112IAT Sensor Circuit Intermittent Low VoltageP1112IAT Sensor Circuit Intermittent Low VoltageP1112Intake Air Temperature Sensor Circuit High/IntermittentP1112Intake Air Temperature Sensor Circuit High/IntermittentP1112Intake Air Temperature Sensor Circuit High/Intermittent

Other Powertrain Codes

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.

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