P0113 Hyundai Sonata
Intake Air Temperature Sensor 1 Circuit High · Powertrain Code · Low · Repair: Easy
What is P0113?
The IAT sensor is reading above its expected range — possible open circuit.
When the Hyundai Sonata triggers code P0113 (intake air temperature sensor 1 circuit high), it typically points to an issue in the powertrain system. Below you'll find the most common causes, symptoms, and repair options specific to the Hyundai Sonata.
This repair is rated easy, meaning basic tools, no lift needed.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Hyundai Sonata.
Common Causes on Hyundai Sonata
- Failed intake air temperature (IAT) sensor or IAT circuit within the MAF sensor
- Open circuit in IAT sensor wiring
- Corroded connector at the MAF/IAT sensor
- Water intrusion in MAF sensor connector from engine wash
Symptoms
- Check Engine Light on
- Slightly rough idle when cold
- Minor fuel economy decrease
- Engine may run slightly rich
Notes for Hyundai Sonata
Most Hyundai models use a combined MAF/IAT sensor; replacing one fixes both circuits.