P0113Intake Air Temperature Sensor 1 Circuit High
What it means
The intake air temperature sensor signal voltage is too high. For this type of sensor that means the ECU sees an impossibly low temperature (about −40 °C), usually because the circuit is open. The ECU uses intake air temperature to correct fuelling and ignition timing.
Symptoms
- Check engine light
- Usually little effect on driving
- Possibly harder starting or slightly higher fuel use
Common causes
- Open signal or ground wire
- Unplugged or corroded connector
- Open circuit inside the sensor
What to check first
- Live data shows about −40 °C
- Bridge the connector terminals with a jumper: the reading should jump to a very high value
- Measure the sensor resistance (OL means it is open)
Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.