P0113 Subaru Crosstrek
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 Subaru Crosstrek 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 Subaru Crosstrek.
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 Subaru Crosstrek.
Common Causes on Subaru Crosstrek
- Failed IAT sensor circuit within the MAF sensor assembly
- Open circuit in IAT wiring harness
- Corroded MAF/IAT sensor connector
- Water intrusion from driving through deep water
Symptoms
- Check Engine Light on
- Slightly rough idle when cold
- Minor fuel economy decrease
- Engine may run slightly rich
Notes for Subaru Crosstrek
Subaru combines the IAT into the MAF assembly; a single replacement resolves both MAF and IAT codes.