MotorBitP0113: Intake Air Temperature Sensor 1 Circuit High
IAT circuit high, usually an open sensor or unplugged connector. The light may come on with a cold-running strategy.
Educational OBD2 information. Confirm on your vehicle with a scan tool. MotorBit can read this code, freeze frame, and live data over an ELM327 adapter.
What P0113 means
The PCM sees an implausibly low temperature (high resistance) from the IAT sensor.
Why the check engine light comes on
Air temperature is used for fuel and spark. A bogus reading can richen the mixture.
Common causes
- Open IAT sensor
- Broken wire
- MAF/IAT combo sensor failure
Typical symptoms
- MIL
- Possible rich smell
- Hard cold start
What to do next
- Check whether IAT is integrated in the MAF.
- Look at the live IAT PID — if it reads -40, the circuit is open.
How MotorBit helps
Open MotorBit, connect your ELM327, and read P0113 with freeze frame (RPM, load, temperature, speed at the moment the fault set). Then watch live PIDs and fuel trims instead of replacing parts by guesswork. When the repair is verified, clear the code and re-check monitors.
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FAQ
Is P0113 serious?
Severity is listed as low on this page. Misfire, crank/cam, and communication codes deserve faster attention than a tiny EVAP leak.
Will disconnecting the battery clear P0113?
It may hide the lamp temporarily, but the fault usually returns and you lose freeze-frame evidence. Scan first, then clear after the repair.
Can MotorBit clear P0113?
Yes, after you understand the cause. Clearing without a repair is how the light comes back on the next drive cycle.