987 · Engine

P0112

Intake Air Temperature Sensor Circuit Low Input

LOW SEVERITY

The IAT signal is stuck low. IAT is typically integrated within the MAF on the 987.

SYMPTOMS

  • Check-engine light
  • Minor drivability/economy effects

LIKELY CAUSES

  • Failed IAT element
  • Wiring short
  • Faulty MAF assembly

DIAGNOSIS STEPS

  • Read IAT live
  • Check wiring
  • Replace MAF/IAT assembly

RELATED PARTS

  • IAT/MAF sensor
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