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2015 TOYOTA COROLLA
1.8L I4•FWD•CVT•gas•2ZR-FE
1 active safety recall on this vehicle — view recalls
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Repairs395Labor501Torque3390Fluid7DTC1177Battery1Maintenance0Recalls1
P1110moderate severityPowertrain

Intake Air Temperature Sensor Circuit (High Air Temp) Malfunction

on 2015 Toyota Corolla 1.8L I4 · FWD

What this code means

The intake air temperature sensor is reporting an abnormally high air temperature or has a circuit fault. This can throw off the air-fuel mixture the ECM calculates.

Symptoms

  • Check engine light on
  • Rough idle
  • Reduced fuel economy

Common causes

  • Faulty IAT sensor
  • Wiring short or open
  • Corroded connector
  • Faulty ECM

Diagnostic steps

  1. Read live IAT sensor data
  2. Inspect sensor and connector
  3. Measure sensor resistance vs temp
  4. Replace IAT sensor if faulty
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