P0113 2017 GMC Sierra Code - Intake Air Temperature Circuit High Input

P0113 indicates that the Intake Air Temperature (IAT) sensor is reporting a high voltage signal to the Engine Control Module (ECM), which usually means the sensor is detecting an abnormally low air temperature.

Symptoms may include poor engine performance, reduced fuel efficiency, difficulty starting, a rough idle, or the check engine light being illuminated.

Common causes include a faulty IAT sensor, damaged or corroded wiring, a disconnected sensor, or a problem with the ECM.

While the vehicle may still be drivable, operating it with this code can lead to poor performance and reduced fuel economy. It’s best to address the issue promptly to avoid potential engine damage.

Check the IAT sensor for damage or disconnection, inspect wiring for corrosion or breaks, and replace the sensor if necessary. If the issue persists, further diagnosis of the ECM may be required.

The IAT sensor is typically located in the air intake duct near the air filter housing or integrated into the mass air flow (MAF) sensor.

Repair costs can vary but typically range from $50 to $200, depending on whether you need to replace the IAT sensor or repair wiring.

A dirty air filter is unlikely to cause this specific code, but it’s a good idea to check and replace it if dirty, as it can affect overall engine performance.

Clearing the code will turn off the check engine light temporarily, but it won’t fix the underlying issue. The code will likely return if the problem isn’t resolved.

Regularly inspect and maintain the IAT sensor and wiring. Ensure all connections are secure and clean, and replace components as they show signs of wear or damage.