OBD code P0113

The ECU is receiving an intake air temperature signal that is unrealistically cold, often due to an open circuit or high voltage.

Estimated severity

Medium

Common symptoms

Hard starting when cold or hot, depending on the case
Slight performance loss
Altered fuel consumption, often higher
Check engine light on

Likely causes

Disconnected IAT sensor or loose connector
Broken wiring or poor ground
Internally faulty IAT sensor

Recommended checks

1. Check that the IAT sensor connector is properly seated.
2. Inspect the wiring harness for cuts or rubbing damage.
3. Measure sensor resistance and compare it with manufacturer data.
4. If the wiring is sound and the reading is still implausible, replace the sensor.

What does code P0113 mean?

P0113 is set when the intake air temperature sensor reports a value outside the expected range, usually too cold, which often points to an open circuit. The ECU adjusts fueling based on incorrect air temperature data, which can affect starting and fuel consumption.

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