P0113 Code: Intake Air Temperature (IAT) Sensor Circuit High
P0113 means the intake air temperature sensor is reporting an abnormally high (or open-circuit) signal.
- Applies to
- All OBD-II vehicles (any make or model)
- Est. repair cost
- $30 – $200
- Time to fix
- 1-3 hours
What it means
Common causes are a disconnected/corroded IAT connector, damaged wiring, or a failed sensor. This is a generic OBD-II powertrain code defined in the SAE J2012 standard, so it applies to virtually any 1996-or-newer OBD-II vehicle — cars, trucks, and modern fuel-injected motorcycles — from any manufacturer (Toyota, Honda, Ford and the rest). Read it with any OBD-II scanner; the meaning is the same across brands, though the exact repair can vary by engine.
Symptoms
- Check engine light on
- Slightly rough running or hard cold start
- Minor economy change
How to fix it
- 1
Inspect and test the IAT sensor
1. Reseat the IAT connector and check the wiring. 2. Test the sensor resistance against the temperature chart. 3. Replace if out of spec, then clear the code.
Frequently asked questions
Is P0113 serious?
Usually mild — the engine may run slightly off, but it’s rarely urgent. Check the connector first; it’s often just a loose or corroded plug.
Last updated July 16, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.