Q:

What can cause a P0113 trouble code for "intake air temperature circuit high input"?

A:

Quick Answer

Causes of a P0113 trouble code for intake air temperature circuit high input include a dirty air filter, a defective intake air temperature sensor and a defective mass airflow sensor. Other causes include corroded or faulty intake air temperature sensor connections or wiring.

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Full Answer

The P0113 trouble code appears when the voltage readings for the coolant temperature increase and decrease in the normal range, but the voltage signal from the intake air temperature sensor circuit to the powertrain control module exceeds 4.5 volts. Symptoms of the trouble code include the vehicle's check engine light coming on, or difficulty in starting the engine. The vehicle may hesitate when the driver accelerates, and the driver may notice a reduction in engine performance and gas mileage.

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