OBD-II code · generic

P0113

Intake Air Temperature Sensor 1 Circuit High

System: Intake air temperature sensor
Severity: Minor (2/5)
Can I keep driving?: Usually safe to drive

What does P0113 mean?

P0113 is defined as “Intake Air Temperature Sensor 1 Circuit High”. This code indicates that the signal from the intake air temperature (IAT) sensor is outside the expected range. The engine computer uses this value to set fuel quantity and ignition timing.

You can usually keep driving, but have it checked soon so a small fault doesn’t become a bigger one.

Symptoms

Check engine light comes on
Slight loss of performance or higher fuel consumption
Hard starting when cold or hot

Common causes

Open circuit or corrosion in the sensor connector (“circuit high” codes are usually an open circuit)
Faulty sensor (on some cars it is built into the air flow meter or MAP sensor)
Short circuit in the wiring

How to diagnose it

With the engine cold, check in live data that the IAT reading is close to the ambient temperature (a reading of -40 °C means the circuit is open).
Unplug and clean the sensor connector and check the pins.
Measure the sensor resistance against temperature (resistance should fall as temperature rises).
Find out which part (MAF/MAP) the sensor is built into.

How to fix it

Clean or replace a corroded connector.
Replace the faulty sensor (or the MAF/MAP sensor it is built into).
Clear the code and confirm it doesn't return after a few drive cycles.

Manufacturer-specific meanings

The same code can mean something different on some makes.

Kia: Intake Air Temperature Sensor Circuit High Input

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This page is general information; an exact diagnosis needs measurements and a technician’s check.