What P0113 means
Diagnostic Trouble Code (DTC) P0113 stands for Intake Air Temperature Sensor 1 Circuit High Input. This is a generic OBD2 diagnostic trouble code indicating that the engine computer (ECU) has registered an operational anomaly in the powertrain (p) systems.
When this error registers, the ECU records a freeze frame of sensor data and lights up the Check Engine Light on your dashboard to notify the operator of a system fault.
Symptoms of OBD2 Code P0113
When code P0113 is active, your car might exhibit the following common symptoms:
- Check Engine Light illuminated
- Slightly rough cold starts
- Poor engine response and reduced fuel economy
Common Causes of Code P0113
Faults that trigger this code typically include:
- Cause 1: Faulty Intake Air Temperature (IAT) sensor
- Cause 2: Disconnected or corroded IAT sensor plug
- Cause 3: Damaged wiring harness between IAT and ECU
- Cause 4: Dirty air filter causing restricted flow (rarely triggers Circuit High)
Can you drive with a P0113 code?
Yes, but the ECU will fall back to a default air temperature baseline, which can cause slightly rough starting, reduced engine efficiency, and poorer performance in hot or cold weather.
Expected Repair Cost Band
$30 - $120. The IAT sensor is often built into the MAF sensor, making replacement a simple plug-and-play process.
Related Diagnostic Trouble Codes
If you have scanned multiple codes, see these related guides for troubleshooting context:
Frequently Asked Questions
It means the ECU is detecting a voltage return signal higher than normal, which indicates a break in the wire (open circuit).
It is typically located in the air intake duct or integrated directly inside the Mass Air Flow (MAF) sensor assembly.